Mass Effect Universe vs All Final Fantasy universes except for 13

No omnipotent/near omnipotent beings allowed

So I assume that means TC Ultimecia, Neo ExDeath, and Chaos are out?

Mass Effect wins, their dreadnoughts would turn every other FF character into ash. Not even counting the Reapers, assuming they are all as powerful as Sovereign.

What could they really do apart from sitting there and getting nuked from space?

3. Please, try and keep them to no more than 3 vs. 3. If they are in teams, each team can have up to 5. Otherwise it just gets too hard to discuss. Matches that are 1v1v1 etc are not allowed and will be closed. The one and single exception to this rule is if each side will be fighting as one army-like team; this must be specified in the first post, else I will assume that it's not the case and close the thread for being against the rules. Gauntlets will be the sole exception to this rule, but I still ask that it stays under 6 opponents.