Looks great, although it's a little too much actiony for my taste, as I perfered the stealth style from previous games. Also the drum is a little ridiculous, lol, I wouldn't see how it would deflect bullets from an assault rifle, and being able to roll over enemies like that is also crazy. AI looked alright, but like from the previous MGS games, they also have bad vision lol, but I kind of like that. Although the AI might have been dumbed down in this demo so it would give a better presentation.
If there were more games for the PS3 like this, it might actually be worth it, only time will tell.