jake_the_fake1 on 13 April 2008
if you want real developers to give you some real answers with out breaking their NDA's then their is no better place than this website: http://forum.beyond3d.com/
Just register and ask the same question you have here but on those forums, and if you then wish to post it here, then go ahead and inform those that belive the wii is capable of producing the same graphics as the PS3/360 although at a lower rez.
Now I'm not advertising the website, just informing the OP of where he can attain the info he seeks.
