Almost all of them have the same screen resolution so how to differentiate on that? Yes, you find a few folk hunting tor the now elusive 1080p displays, backlit keyboards but you have a price point.
Try the list at http://www.amazon.com/Best-Selling-Gaming-Laptops-2011/lm/R30ZVRZ01W4P4E then see what models match your price and more.
Again, these are shorter lived units dues to packing all that into a laptop. But you are buying this knowing that going in.
I am thinking about buying a laptop and would like to be able to play games such as call of duty, skyrim, and battlefield at acceptable frame rates (around 50 fps at high settings). It would be nice not to spend over $1000. I dont really care about design and weight, and as long as the screen resolution isnt terrible im fine with it. Any recommendations would be awesome thanks