They said that overall it's the same. I remember that guy being a pain in the ass. I did beat him, but didn't beat the game out of boredom.
Theirs a ton more content in the PS3 version(I have played both versions). Rachael & Anya are now playable characters. Theirs more boss battles in the game. They added more CutScenes to flush out the story of Ninja Gaiden 2. They also added Co-Op feature. I could keep going what they added to the PS3. PS3 & 360 are not the same when it comes to content. Graphics have been improved as well.
They fixed the camera(Best they can). It's allot better than the 360 version.
Overall Game is a bit easier on the PS3.
Developers have also removed allot of the blood. Some may think it's a bad thing. Personally I think they went a little over board with blood on the 360 version. Their were times after you finished a battle with a dozen Ninja's, the entire screen was covered in blood. It's one thing to have some blood here and their. Blood covering everything is just over doing it.