I think everyone's a little opinionated when it comes to the 'style' of fighting games that someone enjoys. SfxT is a fun 2v2 party game, for me. I like the fact that it's easier and yet has a layer of depth to it. It's not exciting to watch, which takes some fun out of it.
I think for people coming from SF4, there is enough similarity here to apply some of your fundamentals and more than enough new stuff. Everyone has the right to play whatever they want and have fun
But I'm just a bit surprised that everyone seems to conveniently forget their own criticism of other games and rush to defend games they like...there's name for it, it's called fanboyism.
I don't think this is a particularly good game, mechanics wise. Before everyone forgets, the game was designed to be played WITH the gem system, it was balanced around it. In that way, the game is similar to SSBB. Also, before someone blows up at the comparison, I love SSBB.