IMO 15.6" screen is WAY too small for full 1080p. Heck, my 22" screen runs 1680x1050 and it looks great.
I've also got a 22" LCD that I run at 1680x1050. I could not imagine running something smaller than that at a higher resolution... but that is also my personal opinion. My only question is though, if you are getting this laptop for gaming then why are you getting one with such a small screen?