Wow!!! and that's without the 4gb RAM. I find it hard to believe you got over 700 pts than me all because of a 0.1 GHz difference. What gfx drivers are you using? And what resolution did you benchmarked it on?
If the updated penryn models are like the previous models where the 17"ers were clocked higher than th 15" models, then thats how he's getting a higher score. (If you are on a 15")