He got 3x the physics score you did...
Do you know what your cards get individually?
I'm running 2 GTX 980's and only getting about 15k. I only have an I5 though so that might make a difference i guess
I think the processor does some of the physics processing (note this isn't PhysX haha) so I think it might be - he also had a slight OC apparently... and its not just 'any' i7.
With 1 running i got 16.3k. Processor makes alot of difference. I managed to get 25.7k on a rerun.