The problem is you can't release games like AC Liberation or Call of Duty Declassified right next to the launch of the console versions of these franchise titles. When someone is sitting there wondering if they should play COD on a handheld or go online with their 360/PS3 it makes it an easy decision. The same with AC 3. Why should we care about a women assassins and a story we know nothing bout when we are about to play AC 3 (most anticipated of the series) and it will be the last of the Desmond story arc.
Releases like that also fall in line with how Sony handles and markets their exclusives games. You want your exclusives to sell stop releasing them on top of each other and in turn it gives you time to focus on one game at a time to market.
