#'s 2 & 3 should play all those games at atleast medium settings, but depends on the resolution they are run at, crysis, should run on lower settings, maybe medium with some options turned down.
#1 is your best bet for a good gaming system, for Crysis & any newer games that are reasonably high demanding in graphics. in fact considering the GPU & Amount of RAM, as well as CPU speed, its not too bad in price, $1500 for a gaming laptop like that is pretty good.
might be able to get a bit cheaper, but still $1500 is a good price.
but the other two, #2 & #3, I'd go for #3, its got 50GB more drive space, otherwise specs are about the same as #2, with #2 that extra $100-150 your paying for is for the "custom" designed looking casing for the laptop, not really worth it unless you have the money to waste on it, & if thats something you want in a laptop. otherwise #3 is the one to get.
but for gaming, newer games & high demanding ones #1 is the best of the 3.