Like Larynx said, muscle memory. It takes a bit of practice getting used to it, but you eventually just know where buttons are at. I mean, think about it: they're arrayed in a 3x4 grid.
01/02/03
04/05/06
07/08/09
10/11/12
Not hard at all to know where you are. Keyboards are bigger.
---------- Post added 2012-06-20 at 10:53 AM ----------
Actually, most of the people who claim to hate the Razer complain about their hands being too big, so it would probably be just right for you.