But isn't that the whole point of this entire thread?
NV has fixed its driver problems -> performance increases -> the odd capped situation where the GTX460 is faster than the 480 is solved -> performance should now reflect, well, performance -> GTX580 should be ahead of GTX480.
470 and 460 faster than 480 on old (not fully functional) driver.
580 > 570 > 480 > 560 > 460
Properly functional driver. Properly reflective scores because they aren't capped by driver limitations.
The benchmark quoted was suggesting that AMD outscores NV even with the fixed driver because the performance of the built in benchmark doesn't reflect game performance in terms of NV vs AMD difference.
The implication of the other graph is not that NV has a lead, but that the fixed driver is in fact not fixed, or the benchmark is wrong, because with a fixed driver it should be that the GTX580 is faster than the 480, especially when the 580 and 570 have different performance to each other and it scales with the GTX590, meaning performance isn't capped.
Therefore the high GTX480 is completely unusual and not what you would expect under any circumstance. If it was because the cards were capped, the GTX590 shouldn't scale and the 580 and 480 should be at about the same level, the 480 shouldn't have a 10% lead.
They also have some odd results in other Civ 5 benchmarks, like the 6970 being soundly beaten by the 5770 and sometimes almost the 5750. Since they use the same architecture, and have the same functional units, and the 6790 is improved in many ways, it's odd that it would ever be slower, especially when you crank up AA and res (1920x1200/8xAA and the 5770 is faster than the 6790, despite the massive bandwidth advantage of the 6790 and the improved tess performance and the equal in every other aspect specs, on paper at least).