Who cares? What does a game's popularity have to do with anything? Shouldn't it come down to: Is this game fun to play or not?
I'm just getting around to playing the original Gears of War, and frankly, I'm a bit underwhelmed by it. Assuming Final Fantasy XIII were out or even Star Ocean 4, I'd be much happier getting one of those compared to Gears of War 2.
So again, shouldn't it be more about what games are fun to play, not which have a bunch of hype and marketing behind them?
Gears of War 2
Call of Duty World at war