It depends on the game. I think we're right at the point right now where some developers are making a huge push toward absolute realism (see: LA Noire's facial models and Battlefield 3's destructible environments), but it's still in the early stages.
I think a huge part of the problem isn't a sudden move to laptops, I think it's that the current generation of consoles is seven years old, and major developers (i.e. those with the resources to innovate) tend to design with the console in mind these days.
I think a huge part of the problem isn't a sudden move to laptops, I think it's that the current generation of consoles is seven years old, and major developers (i.e. those with the resources to innovate) tend to design with the console in mind these days.