Also, why is everyone talking like SFxT is a great tag game?
Because it is. It's a niche game like CvS2, not for everyone because it's highly focused around footsies and sick reads and there's no serious comeback mechanic. So matches can end really fast or take forever.
lbsh Most players who hate the game are really shitty players with no patience and no fundamentals whatsoever. They can't handle having to work hard for comebacks and having to deal with neutral/mid-range. They just want guaranteed 50/50s all day on every knockdown and they want an easy x-factor button when they're trailing from behind.
Injustice is similar to SFxT in that you have to work very hard for your comebacks and the player with the best footsies, patience, ressource management and knowledge usually wins. Unless of course it's a really bad matchup like 3-7 which there aren't a lot of to begin with.
The main difference between the 2 games (aside from the tag elements) is that Injustice is extremely fast paced. In 1000 games I literally only had like 1-2 time outs at most. And most of my matches end in 1 minute and a half. So that's cool because you can play more games in less time.