No one has MvC2 on any playable system today, because it was removed at some point from all digital stores. Not counting the obvious piracy choice, the MvC2 community that’s still going strong has been crying for a rerelease for literally two decades. So that collection has a decent chance of doing notable numbers.
But yes, they pulled that bait test a couple times before and never went anywhere with it and that was super shitty. I don’t have any hope that this will revive MvC because it’s not up to the players, it’s up to Marvel to let Capcom make a good game. This collection is still very much appreciated either way.
Project Justice is coming back in the next Capcom Fighting Collection, some time next year. Along with Plasma Blade, CvS Pro and CvS2, etc.