Arcansi
Smash Champion
Also a history where the metagame hasn't been given time to develop very often in between games.The 20 year history of the fighting game scene where the only things banned have been characters that render winning with any other character an impossible task, or bugs that render the game literally unplayable?
An argument of 'find a way around it' works when the metagame hasn't staled out.
Note that your not even right, because of the infinites in MvC3 and the fact that the other fighting games balance their games meticulously.