Asura's Wrath is pretty fantastic. I mean just look at it. The art design is pretty much top class. Just great character, world deisng, whatever you name it when it comes to art the game has it done well. Even the illustrations you see in the game are very cool. There's some tecnical issues that hurt it's cinematic presentation, but they suck only because what you're seeing is so cool you want it to be as great as possible.
The music is even great and well placed in the game. There's one track that plays for a character then you will know very well because how badass it makes every scene it's in.
The anime tv structure is also just kind of adds to the fun.
And you know what? The story in Asura's Wrath is actually pretty damn good. I would say probably one of the best stories this gen, it's almost a shame it won't get it's due. I mean yeah it's a genre piece, but it knows that and it executes it's genre well. It's pretty well written with characters actually having personality and some even being more then "I'm just good" and I'm just bad". It is what it is and it does it's thing very well. The thing is you will need to get the real ending DLC, but it's worth it.
The game part is well, you know what it is. QTEs and basic third person melee combat. It doesn't offend, but it's nothing special. But the sheer package of this game is really entertaining for those who have a love of Japanese games and stuff like Fist of the North Star.
As for Street X Tekken. I think the game looks pretty good and is pretty fun. I'm no expert here, but I mean if you like SF4, don't see why you would hate SxT.