For me it was and still is Assassin's Creed that made me think I might have gotten the wrong console or atleast picked my console too soon. As long as Microsoft has Fable and a few other wRPG then I'll never switch to Sony as wRPG happens to be my favorite genre. A genre that Sony unfortunatly did nothing for. It wasn't until Microsoft got Morrowind on their xbox and worked with Bioware to make console-WRPG that I switched from a PC gaming to the relax gaming pleasure that is console gaming.
The PS3 is a good console (best this gen) but that doesn't mean it's the best gaming device. The games make the console and it's a personal thing but for me the PS3 just doesn't hold many gems. MGS4 and GoW3 are good enough games but I can't care for it just like I can't care for GeOW1/2 and Halo:Reach.