people shouldn't forget microsoft only has one console. if they would have a handheld they surely could show more games in 90 minuts. other companies don't have more time but 2 devices, everyone should clearly know they have more games in the conference before the conferences starts.
we had 9 or 10 exclusives and some games like cod and resi, you can't expect much more for one console (only which games is the question, but that is just own preference)