You need to remember, Fermi is designed not "Just" for games, but was also designed, from day one, with computing in mind as well.
Yeah that's why without the specialized workstation drivers (the area nV has always had an edge) their GTX480 gets handily beaten by the lowly HD5870;
For some reason Uwe et al, didn't think to include desktop models to show this dramatic difference due to drivers, simply to make it a one sentence statement later. Something important to the majority of the people who have to pay for their own rigs and not have a purchasing department make the decision as to what's approved. [:jaydeejohn:5]
As for Fermi being designed for computing in mind, it's a specialized tool, and in the Sandra GPGPU tests (for some reason skipped by Uwe) none of the Fermi designs excel;
Thanks in part to all of those Fermi parts being artificially crippled for marketing purposes, so the design argument doesn't really apply here despite what some n00bz may think.
Fermi works best in specific scenarios, and there it does excel greatly, but the majority of non-institutional systems will likely never get access to, let alone make use of those benefits.