Well, they did say they were estimates, not actual numbers . Besides they are fairly accurate estimates, putting aside the fact that GCC -O2 is not something you would use outside of debian packaging.
Though looking at how magically results (on Naples) for GCC -O2 are higher than every other benchmark posted today... Huh
Wait, wait, wait. There is no anywhere near 45% delta between GCC -O2 SPECint and ICC SPECint, in fact, it looks to be around 10% at most. Assuming (for AMD's sake) techreport screwed up as well with their chart (multiplying results by 0.575 instead of 0.7), Naples advantage suddenly looks much more.. uhm, how do i put it... humbler.