You really can't go by that.
For example:
Most people rated Wii Sports poorly yet it's the biggest selling most loved Wii game out there.
Wii Play another title hated by critics and loved by fans.
Red Steel got many mixed reviews and yet there are many many people who really like it. I enjoyed my copy, I know many others on here did too. SSX Blur got a few mixed reviews and it was a great game.
DS too despite having generally poorer reviews then the psp, the psp has typically similiar games as the ps2, while the DS has completely original content. Nintendogs, Brain Trainings, Pokemon RPG, your talking about huge franchises that are creative and fresh on a touch screen, and offer no comparable experience on a console. Monster Hunter and Loco Roco are the only two good psp games that don't have a similiar/better console game.(and that will change with Monster hunter 3)
Sometimes people don't want what critics think of as a master piece. They want whats fun and exciting for that system. Besides alot of stupid games get great reviews, like Luminees, Puzzle Quest, Cube, Exit, Crush, Puzzle Scape, Mercury, I hate puzzle games, they don't even sell that well, and yet they boost the average rating for that system, so it's kind of pointless to use this kind of arguement. Besides ps3 software as a whole isn't being challenged it's their exclusive content.
