Honestly its not misleading - everyone has always stated - 7950 is faster OC and there is so much room to OC that card it matches its big brother GE edition and 680 for so much less money.
Its also less than 670 - by 30-40 pounds for boost edition for normal 7950 I can get it nearly 100 pounds less.
Only feature *which btw isn't in any AAA game coming in the right future* is physx; again there is only 1-2 games that its even worth a small look at......
So - Nvidia isn't smoother or better than AMD when it comes to drivers; just like AMD really isn't smoother or better - each perform well in games - some better than others.....
I can say though; AMD never released a driver that blows up a card unlike Nvidia.....

*See how generalizing isn't good from either side*
I'd rather give people advice to get best bang for their dollar/pound than argue which side is better.
Nvidia has some great card - but bang for buck/quid; AMD is far better; you can't match 7950 value....
Honest there isn't a reason to pick 670 over 7950 unless you are die hard nvidia fan.....or the games you will be playing are better on the 670...

but with the way driver improvements have gone; really isn't any games that do that.......there are still a couple though