Just because three games are going to be released in the same timeframe, doesn't mean a person can only buy 1 of the 3 games.
I probably wont get any of the 3 anyways.
These are big games which people will mainly focus on one at a time. You can't beat one in a week (except MW3) and play the next one. Uncharted 3 and Elderscrolls 5 should take awhile.
I, and I'm pretty sure more than just me, am a kind of person who cannot sit there and play the same game day after day. Especially Elder Scrolls (unless they really improve the combat), and any shooter.