How can that possibly be true? Top 10 selling 360 and PS3 games:
2 COD4 - shooter
3 MGS4 -shooter Stealth/Action Adventure
5 R1 -shooter
7 COD 5 - shooter
9 Uncharted - shooter Action Adventure
1 Halo 3 - shooter
2 COD 4 - shooter
3 GTA 4
4 GOW - shooter
5 COD 5 -shooter
6 GOW 2 -shooter
8 Forza 2
So, 5 shooters each? There's no argument there.
there are alot of reasons, first is that Halo 3 is a launch tittle and people who bought the xbox bought it cause it was the only AAA tittle available , Second Xbox owners love shooters most so its no suprise that the commercially succesful Gears was selling.
Ps3 owners however are varied , alot of them like RPG's and some like racers, sports, adventure ...ect the shooter fans are little compared to the PC and xbox 360 but they did grow overtime.