I'll just go with some exclusives from each hardware manufacturer along with some 3rd party franchises to balance things out:
Nintendo: Pokemon, Splatoon, and Animal Crossing are highly overrated.
Microsoft: Halo after the first 2 games and Gears of War are two of the most overrated series in gaming IMHO, and have been even more and more disappointing with each installment.
Sony: God Of War, Uncharted, LBP all highly overrated.
3rd Party: Metal Gear, Crash, Final Fantasy + about 95% of JRPGs.
On 2/24/13, MB1025 said:
You know I was always wondering why no one ever used the dollar sign for $ony, but then I realized they have no money so it would be pointless.