All I know is the PC version is fine. Just enable vsync. It's just as fun as the first game but with added combo weapons, I'm just hoping there's more cards than 8. And the loading takes less than 2 seconds on my PC.
I liked the demo, it just felt the exact same as Heavenly Sword which is very unfinished. It seems Ninja Theory doesn't really know how to do animations all that well, or know how to polish their games. The sounds also seemed very lacking in realism. I will buy it one day, but that wont be for a while.