To that end, may I propose that:
Vox is fucking effortless at bottoming. Truly, a natural. Anyone who has topped him has had their world rocked, and he himself finds it incredibly physically pleasurable. Despite this, he isn’t really a big fan of it. Sure, it feels fucking great, truly astounding, but he’s so neurotic about how he’s seen & his reputation as a macho 50s TV emperor (not helped by working with two people who aren’t above gossiping & teasing him about it, and possibly throwing him under the bus and publishing it to the gossip rags if it means a ratings boost), that bottoming tends to make him go insane. So he tends to prefer topping, at least aesthetically.
The problem? He sucks at topping. Like, objectively. It feels great for him, but it’s entirely The Vox Show. He isn’t a reciprocal partner when topping, he’s got no technique, foreplay is him tossing a bottle of lube at his partner and saying "have at it, babydoll!", and it is pretty obvious that what he’s getting off the most to is the image of himself as the top. Like, girl, if you didn't have two dicks and built in e-stim, it would be so over for you.