Some FC2 numbers from a slightly overclocked Core i7-920 setup with a stock Radeon HD 5870 board, tested with the same benchmark settings as seen from the video leak:
Average Framerate - 73.92 vs. 84.18, Fermi wins by 12.2%
Maximum Framerate - 111.01 vs. 125.84, Fermi wins by 12.8%
Minimum Framerate - 54.55 vs. 65.21, Fermi wins by 16.4%