How will the Wii U fit games on the PS4, if the PS4 will have 7GB RAM available?

[richardhutnik]

curl-6 said:
Call of Duty Modern Warfare 1 & 3, Black Ops, and World at War ran on the Wii despite the Wii having 88MB of RAM to the PS3/360's 512MB.

So the PS3 and 360 wil also have no problem play next gen titles at all either, right?  So, then what is the extra RAM on the PS4 needed for if the Wii U is more than capable of doing everything you had mentioned?

However, assuming this review is valid, apparently MW3 didn't exactly hit the same levels that the 360 version did:

http://www.ign.com/articles/2011/11/15/call-of-duty-modern-warfare-3-wii-review