well, I am fairly new, only say something when i feel it needs said. And the 2 ATI cards i had, i sold almost immediately after buying them. I was really mad about the one. I got it free from There.com and was super excited to get it. Then it just had problem after problem. Never OCd it or anything, tried newest drivers, forum help. Nothing would help it. So, i sold it on ebay and used the money to buy a Nvidia. I dont even remember what the other card was. But as much as i would love to buy a new card my Geforce 4 ti 4200 with 128 MB and 8X agp, still gets me by enough to not upgrade. That and being broke prevents it..lol.
Now getting on the actual info of this thread. I honestly would not be surprised if this was true. Especially in the hardcore gamer arena it is a tough market. The battle renews every 6 months almost whenever either manufacturer makes a new card. I am a avid gamer that is currently 24 and have been gaming since i was like 4-5 years old on my RadioShack TRS-80. I use the fact that the cards keep coming out to buy a slightly older tech such as a 6800 to get a "newer" card for a much smaller amount of money. EG: $100-150. I turn down the "prettys" a little and game on. I have seen machines with high end cards running all the settings maxed and honestly dont notice enough difference to justify buying a card that will do that. This coupled with the fact that I am a hardcore UT2004 gamer and that is majorly all i ever play, aside from a demo here and there. My card pushes it just fine.
Now i know that some people will jump all over this and say i dont know what i am missing, but this is just my opinion. Please remember this. And if you cant tell, Yes, I am a Nvidia fan. But no i am not paid to say that. (wish i was though, or even given a "gift"(hopefully a new card))