For those who still like SFxT
http://ps360.ldblog.jp/archives/53562470.html
The input lag tests between PS3 and 360 average out to basically the same. PS3 runs at a consistent 60 FPS where the 360 dips at some points.
Also people say with a seemingly large degree of certainty that the diagonals on analog problem is 360 specific and not an issue on PS3. And of course, couch co-op play is PS3 only.
Now with those lag and FPS tests done, there's no longer any question. PS3 is the place to play this game, it's better in every respect.
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http://www.youtube.com/watch?v=npHDxSvwCE0