OK so like. Motormaster. And Vortex. *throws them at each other, waits for horny*
okay i gotta be honest my absolute first thought was "ooh, that would be one hell of a messy fight"so I think that's what I'm going to talk about. Up to you if you think "robots trying to kill each other through the power of incredible violence" qualifies as horny lolol
In terms of direct strength, Motormaster wins by like. not a mile, more than that. Vortex is technically a warframe but he's a helicopter, he's not built to tank damage, and his job is "torture already-defeated enemies", not frontline warfare. Motormaster comes equipped with (if you care to give it to him, anyway, which I do) a full on forcefield to tank damage with, he can tank damage without it anyway, his job is kill people in the field of battle, and he has a really big sword along with the other weapons. If they were fighting in a one-to-one fight with rules then Vortex will always lose.
But, like, baaahahahaaa you just KNOW neither of them are playing by the rules.
In terms of successfully cheating, Vortex wins by a fucking landslide. This guy fucking loves pulling one over on everyone around him and if that means he gets to make Motormaster crash into six walls head on and throw sand in his eyes and glue him to the floor he will. He literally has a glue gun. He will cut your achilles tendons if he can figure out where they are and he will laugh about it. He will get you to grab him exclusively so he can shoot up 50 feet in the air vertically and then shake you loose so you hit the ground really hard. Motormaster, by virtue of being big and strong, is far less accustomed to cheating to get his way and largely is interested in there not being rules so he can do things like "pin you to the ground and pull off your rotor blades and your arms before I kill you," which is typically also not allowed in a bout with rules. (Not that I think Vortex would really mind that, lol.) He is used to having to chase around the rest of his team, but Drag Strip and Wildrider's version of shitty unsportsmanlike cheating behavior in a fight is very different from Vortex's, and Vortex's ability to fly sets him apart from the Stunticons some (i can't remember if they can fly, but they certainly don't default to it).
If you actually put them against each other in a reasonable fight, I'm not sure who I think would win. Depends who got the first couple hits in, I think. They're about evenly matched if you allow cheating, but Vortex can't take damage on as easily as Motormaster, so if Motormaster scores early Vorttex is kind of fucked; Vortex is just also (in my opinion, at least) to go for disabling injuries that are more likely to put you at a continued disadvantage than Motormaster is. I just don't think Motormaster fights like that. He doesn't have to. And, of course, by virtue of being a fucking speedy cheater asshole, Vortex is less likely to be hit than Motormaster overall, Motormaster is just better at walking it off than Vortex is.
Either way, there would be blood everywhere and if you got close enough you could totally score a bunch of purple and teal plating to hang on your wall as a souvenier, so I think no matter who wins, I, personally, am the real winner. I love watching my favorites beat the shit out of each other.