I doubt MGS4 sales won't take away from NG2 sales. In terms of software, both games will sell well, but MGS4 should sell much more. Ninja Gaiden has a hardcore following that will buy the game regardless, and Xbox360 owners won't really have a choice but to get NG2 during that month since there's really nothing else out, likewise same goes for MGS4. MGS4 will clearly move more hardware than NG2, but that's a given.
Either way, I don't think mgs4 will do any part in sabotaging NG2 sales, nor do i think NG2 will have any effect in MGS4 sales. As a multiplatform owner I'll get both, and I'm sure other mutliplatform owners would do the same.








