How much should weight classes matter in more fantastical martial arts series like this? They're all unambiguously superhuman so it makes weight classes feel more arbitrary by default.
>Riko crushes hard concrete with her grip alone
>Yuzuha can crater the ground with stomps
But someone who's untrained in-universe, like say, a bystander or one of the CEO's in KA wouldn't be able to do either. Someone who is 80 kilos given this setting could muscle it out with a 120 kilo person and it wouldn't be too egregious, so I ask again, how much should weight classes really matter if they're all superhumans?