He sure went a long way to avoid saying "Microsoft gave us a buttload of money to have co-op only on the XBox"
I'm with AE. This decision says to me, id isn't willing to release Doom 3 exclusively on Xbox first, but they are willing to create an "Xbox-only co-op feature", just for Microsoft, for a whole lot of $.
Yet another console sell out.
"Warren, meet Todd. Todd, meet Warren."