I'm not seeing a problem here. They're still working on getting the performance out of the 6x00 line before submitting Microsoft-compliant drivers for WHQL authorization, which is perfectly fine. The 61.77s work just fine with my 6800GT without any stability issues or glitches, so not having WHQL means a fat load of nothing to me. I won't upgrade again until their next public driver release though, so I know I'm getting quality-tested (if not WHQL) drivers.
And as for nVidia talking smack about ATI's drivers, so does 98% of the internet. ATI's drivers are notoriously terrible, so why should nVidia stating a known fact be cause to shout that nVidia sucks, is cheating, and is a bunch of lying Satanists who sacrifice sheep to the altar of Bill Gates? [/going too far on ridiculing ATI fanboys] Just because ATI managed to squeak through the WHQL testing while all of nVidia's compatibility upgrades in their 6x.xx line of drivers don't doesn't say much, considering that nVidia has to pass WHQL testing on an entirely new core, as well as their older cores; how many cores does ATI have? Two distinct cores, with the rest being derivatives of those cores? Which is easier to ensure WHQL compatibility on?