PS2 && Unity Ripping Help??

I want to rip models from PS2 games, I.E: Constantine, Tenchu 3: Wrath Of Heaven, Super Hero Squad, Iron Man and a few others. I'm wondering if NinjaRipper will work for a PS2 emulator.

Also, I've noticed models that have been ripped from games that use Unity within web browsers, how is this possible. I'd like to rip the models from THIS WEBSITE.

Thanks in advance
Ecelon