If you think SFxT is a better pad game than UMvC3, you're certifiably insane. That is all.
Blazblue/MK/UMvC3 are all
factually easier to play because they don't use 6 attack button layout where you're required to awkwardly map buttons to L/R.

6 button fighters without a stick have sucked on a pad since the Super Nintendo.
SFxT is good on Vita... but those 6 buttons man, it's just a drag. It's a game of "which two buttons do you use the least, map the other four to the face buttons and hope it works". Good for portable play and killing time. Horrible for competition.