A few hardcore fighter fanatics didn’t like that Capcom went with 2 v 2 rather than 3 v 3, a few people were rather disappointed that it didn’t use as many buttons as some games, in saying that though, the game has a lot of depth which people would have realised if they actually sat down and played it.
Honestly, MvC3 killing of TvC is weak, they are very different games, I think people just fail to see them as such. That’s like the idea of MvC killing off SFIV. Honestly for anyone that doesn’t want to learn it because they feel it will be too similar to MvC, they are quite different games.
The biggest flaw with TvC, apart from being on the Wii, which seems to bother some people, was that anyone using the Wii Mote can just Herpaderp any combo in the game, and the game wasn’t boxed with a fight stick or even a classic controller. It NEEDS to be played with a classic controller/gc controller/fight stick, otherwise the inputs are simplified to Smash Brothers levels of hit the special button while pointing the analog stick in a certain direction. So if you do pick it up, do so with a proper controller.