User blog comment:Pedro9basket/Battlefield 3 Pre-orders matching Call of Duty: Black Ops sales/@comment-94.99.7.48-20110728134458/@comment-1916935-20110802033555

I saw the perfect comment on youtube:

Battlefield 4: 2013

Black Ops 2: 2012

The dates are like this becasue one game will be fun for the first 6 months, then get boring. The other game will be fun for 2 years, and still be fun after the next game is released. That about sums everything up.