How are stats factored into PvP?

Some of it does involve skills.

Fixed for you.

It's not skill, it's skills. Roar, crash, magnet, seal, stun, these are skills you get for your class. Spamming them on other classes that don't have skills like that isn't called skill. If it were an even battle field, 1v1 with two classes have the exact same everything, and one of them was winning more often, i'd attribute that to skill. But that's not how pvp here in maple is.