Based on the NGS2 demo that I've had since yesterday, I can confirm that the slowdowns are still there, just random. Others have also reported the same.
The strange thing is the game has half the enemies per encounter compared to the 360 NG2 even on Master Ninja mode. It looks a little sharper though, but both games are beautiful side by side. The PS3 version shouldn't have been censored since the frame rate is still going to slow down.







