The lag online in PS Vita is equally just as bad as on the consoles, the damn input lag rediculous. I just lost 3 times in a row from VERY cheap players (2 Ermacs and a Sub-Zero) who just did that anoying push-back move and some basic BNB combos. I also noticed the game loved to ignore the block button, even when I pounded it as hard as I could. There better be no Gamespy Serves for Injustice, or the online will just be a piece of dog shit like MK9.
This game has no lag online.