Quake is good for attack but she sucks in defense
that is why i can't really keep her with my squad... totally useless for defense.
I don't have the slightest clue about winter soldier tbh. Arena is alot about speed. Drax only works as slow character because of his onspawn taunt
While for example Hulk as tank just means your primary dps dies before Hulk even gets turn. Which is why hulk & cap are never paired in defense even tho nice synenergy. Cap taunts on 2nd turn & hulk is slow af so everyone is exposed for two turns. Teams need turn1 & turn2 taunter. like cap + xbones.
Thor is also rarely used in arena. slow & fairly squishy too
If you want quake in team you also need someone to replace her with in defense.