Forget improved framerates, more playable characters, more missions, online co-op and improved camera angles! Those are small chump compare to the VITAL change Team Ninja has made to Ninja Gaiden Sigma 2:
Yes that's right, you heard it here first folks (unless you read any one of the numerous gaming news website in which case you heard it from the source rather than a lame attention seeking copycat), Thanks to the profit from the 360 exclusive Ninja Gaiden 2, Team Ninja has generously given Ayane-chan a face job, the kunoichi now looks twice as hot as her 360 appearance thanks to the wonders of silicon, a sharp scalpel and a dubious plastic surgeon from Malibu that always smell of garlic and burbon!
360
PS3
360 (Ayane before she went under the knife)
PS3 (Post-facial - first appearance! Miss Ayane is a changed woman!)
Pole Dancing Ayane (Because... well why not?)*
Source: Sankoku (sorry no link, site contains nsfw stuff)
*Exclusive on the Xbox360 nehahaha Sony fapboys loses!!!