One, here is more indepth of my opinion of how Queen Bee fights versus Vesperia. Admittedly, doesn't factor in Season Six, but also Vesperia hasn't....really shown too much off in Season Six either. The most impressive stuff she's done against unpowered civilians. Malediktator is her one ACTUAL escape while acting as a HERO. (Queen Wasp was a crash out, not a hero outing.) Also, as a note, her FIRST outing as a hero. Some aid in a fight is expected in a superhero team fight. But Chloe was still doing more than LAUNCH THROUGH A HOLE. And again, Vesperia has MANY shots. Queen Bee had ONE and missing puts her on a dangerous timer.
If she missed Mayura, even if SHE wasn't stung by a reversal, it meant she had FIVE MINUTES and Mayura just has to run out her clock then. Chloe's mission was to keep on Mayura and this was her THIRD outing, she can't be sure she CAN beat Mayura, so her priority is making sure she CAN keep on Mayura and using Venom is tactically a terrible move. Vesperia probably would have used Venom in that fight, Chloe knew better.
Two, here is the whole "Marinette holds Chloe's hand to improve" and how that entire premise is BS because actually, no one had to hold Chloe's hand THAT hard to be a better person, they just had to hold it for literally more than two seconds at a time and not encourage her to be like her abusive mother. Keep in mind! Zuko had Uncle Iroh to learn from! Chloe took literally a grand total of maybe Three Minutes and One Mister Cuddly Party and got pretty far while also trying to bond with her nightmare of a mother. Chloe needed GUIDANCE and she went FAR with her LITERAL CRUMBS of it and ACTIVE FORCES TRYING TO DISCOURAGE IT CONSTANTLY. Girl didn't need hand holding, she needed someone to actually be helping with even a tiny bit of consistency.
But in specific response to Mayura dominating the fight?
Oh, she absolutely wasn't, because if she was, the best move to do in that moment would have been to steal the Bee.
And we know this because that was the plan in Heart Hunter and Miracle Queen.
Think of this situation from the villains' perspective. They DO NOT know what Ladybug is thinking and will do in the future. They don't know if she hesitated to share the Bee with Chloe because of safety concerns, if she didn't think she was best, personality, they DON'T have this perspective, especially since the only two she does actively recruit is Carapace and Rena Rouge. Everyone else has been a one or two off, so it could be simply about utility.
They DON'T KNOW Ladybug is going to take back the Bee and say she can't give it over again after Miraculer.
Miraculer is about sowing doubt in Chloe. In what Ladybug thinks and herself.
Akumatize Chloe? Oh, look at you, how can Ladybug TRUST you if you let your negative emotions win like this. A point of pride for Chloe in Hero's Day, clearly a thing Chloe sees as a selling point to Ladybug.
Well, shoot, didn't get her, but we DID get Sabrina. So let's see what Ladybug does.
Doesn't give the Bee? Oh look, she won't even let you help your BEST FRIEND.
DOES give the Bee? Test her loyalty, make promises, see how much she is swayed.
But why does Mayura need to take the Bee?
Because they don't know Ladybug's follow up. For all they know, this could turn things around between Ladybug and Chloe. This could make Chloe trusted. This could get her the Bee Miraculous more. Or it could strain things. They CAN'T BE SURE what the outcome is if Ladybug gets the Bee back.
But if THEY have the Bee by the end?
How can Ladybug ever trust you again after you lost the Miraculous?
They know Ladybug doesn't jump to Chloe, so more than likely if she lost the Miraculous, she wouldn't call on her again. Especially since Ladybug clearly has favorites already.
Mayura letting Chloe walk away with the Bee is FAR more risky for the villains. It leaves a power WITH the heroes, and could ruin their manipulations of Chloe entirely. Stealing the Bee, at minimum, they have another Miraculous on their side, if not the ability to manipulate Chloe.
If Mayura was dominating that fight, she'd have the Bee.
And we see this in Heart Hunter because think about Miracle Queen for a moment.
The villains plan is very dumb. You find all the Miraculous, you find the Guardian, and you....DON'T bring him to a third location to pry him for information and make a plan with all the Miraculous? You bring him to a final battle so the heroes could potentially save him AND all the Miraculous, which they DID? Like they don't know about the memory wiping, for all they knew, they had a man they could work on for forever until they got him to talk.
Unless, of course, they didn't plan Miracle Queen to go that way.
Or rather, they had TWO PLANS for what could happen.
See, for these plans, the villains CANNOT rely on Ladybug's actions as a win condition. They can't be sure how Ladybug will treat Chloe, and more over, they can't be CERTAIN they will follow Ladybug to the Guardian.
But they can recreate scenarios that HAVE worked in the past to try and get a win EITHER way.
Step 1! Recreate Miraculer. With what Ladybug did before, because they don't know Ladybug said she can't be Queen Bee anymore, she will recruit Chloe to fight her parents. So if Ladybug is pressured, she will attempt to retrieve the Bee to recruit Chloe and this is where we get into the TWO PLANS.
Plan A! They manage to follow Ladybug to the Guardian. They let Ladybug go off after Heart Hunter and jump Fu. Guardian and Miraculous secure! Off to a third location for questioning!
But oh no, what if they lose Ladybug on the way because she detransformed.
Plan B! We are between Ladybug and Chloe either way and are in place to spot her again. We get in the middle, steal the Bee from her (and maybe the earrings, but the Bee is very probable since that isn't ATTACHED to her) and Miracle Queen proceeds much the same way minus all the other Miraculous users. Make a very strong Akuma mixed with a Miraculous with a more curated power.
After all, they've been working on making Chloe feel she has no control this entire season, likely that will be how her power manifests. They play on all the cracks and insecurities they've seen and made in this girl to supercharge the Akuma, especially when they're more prepared instead of taking of an opportunity in Queen Wasp.
In the end, Plan B rests on Chloe never getting the Bee again, never mind if the villains stole it. If Mayura had taken it in Miraculer, things would be EVEN BETTER because they could have mentally compromised Chloe MORE.
And Plan A could have happened in loads of other places. Doing it with Chloe just means they one, know where Ladybug is GOING to be moving, and two, have a decent back up plan.
So why the messy final plan in Miracle Queen?
Because they suddenly realized they could do Plan A AND Plan B.
Because Ladybug didn't take the Bee and instead of defaulting to Plan A LIKE THEY SHOULD HAVE, they go 'well, we had two good plans, why not combine them' for extra ego points for Gabriel.
Except putting the two together actually compromises Plan A HEAVILY and Plan A was the far more important plan.
No, Mayura wasn't dominating that fight, because they had EVER advantage if they could steal the Bee from Chloe and had FAR too much to lose if they didn't.
Mayura ran because Chloe was way more capable than she was counting on, and had gotten far too close for her to be sure she could turn it around.
As for Queen Bee probably being teamed up with Pegasus later? Maybe, but also Queen Bee is more likely to go 'we CAN do more than just have portals solve all our problems, what happens if he gets a cold?' Chloe likes fighting, she'd actually push for training. Girl was in ballet for eight years, she isn't afraid of a physical work out.
Honestly, Max is being overworked overall. Yeah, portals make things easy, THAT'S WHY YOU DON'T USE PORTALS ALL THE TIME, find a reason to justify why Max can't be there, it makes for boring fights.
But it also means if Max isn't around, Vesperia is shit out of luck. She straight up does NOT have the skills for a real fight.