I'm looking for someone who has done it. If you don't know anyone, that's fine.
Uhhh... If you swapped into FTS I don't know how you'd wind up dead. And if You switched Toshi out into any other world with a magical setting, he'd become insanely powerful as he is lit Literally a walking batter of near-unlimited power. I thought about what would happen if I switched Ryan and Toshi.
Toshi would actually have the problem of trying to keep his magic under control because he would be a walking Nuclear Reactor in a world of bic lighters. He'd have absolutely zero finesse. It'd be like watering a cactus with a Firehose. He'd be his own worst enemy.
Whereas Ryan would wind up in basically normal world, losing all of his elemental magic, but because he also has his aura core, as aura magic is allowed in Reverse world, he'd still have his physical enhancements, making him a superior being to everyone else on the planet.
In fact, I would say both would IMPROVE if they were to switch places. They are both suppressed by their situation. Toshi because he has unlimited potential, but is in a world where magic is nerfed, and Ryan because the social setting makes him a pariah. He is a half-breed and socially is an outcast, so he has had to claw his way to a position of respect every fuckin step of the way. If he was in Reverse world, he'd be a social GOD.
In reverse world, males should be small and weak in appearance. Ryan is a half dwarf, which means he is the height of a dwarf, with the proportional body of a human. (magic world genetics) He would be a Shota, which in Reverse world makes him one of the sexiest fetishes the women lust over. Adding on the fact he has an aura core, he'd be able to literally sleep his way to the top of Only Fans in a week.
However, He wouldn't be extremely powerful, but socially powerful. I don't see how one becomes Extremely powerful, and the other is dead on arrival.
Your sweeping generalizations really seem to be a problem of bad authors, not bad situations.
Hotrod wouldn't care. Toshi would be interesting, but I doubt it'd be a growing experience. Angel/Jack would just roll with it.
Ryan I suppose.