The demo sucks, it requires 2 controllers no single player demo, no online demo LAME.
Since I couldn't PLAY the demo because of that nice little handicap I found some impressions on Neogaf.
+The game looks great in crisp mode on my 1080p monitor. I'm impressed!
- Got SLOWDOWN when cancelling from one character's super into another. WTF?
+ 16:9 mode, yeah!
- The background isn't fully widescreen and you can see where it "ends" at the edge of the stages. Sloppy.
- The sound quality could be better. The voices sound muffled.
- Having the online multiplayer options highlighted like they're available is such a tease. <--- If you select it, it tells you that you need to upgrade to the full version, which isn't current available.
Also on observation, they killed the intro which is lame
Demos this generation downright suck.