I see that Nvidia's market share has been falling steadily for the past few years. Wonder if their guys are into marketing as well?

Read again! This time don't try and discern what's between the lines (nothing there) just read the post.

People don't buy a game, see the logo on boot up and then go out and buy an Nvidia card. They're already playing the game which means they already have a card. Plus people who are likely to buy a video card and install it themselves are much more likely to actually research their purchase rather than blindly grab a green box. Sure some buy Nvidia, but the numbers show that a lot of them are switching teams. A lot of the easily swayed people who make those kind of snap decisions that Nvidia are banking on have already moved on to consoles, they don't have to make that decision any more, and the market is reflecting that.

Hardware junkie today (as opposed to 5 or even 10 years ago) are much more savvy and less swayed by brand loyalty and all the little extras that only add to the cost and not to the FPS. The PC hardware market is shrinking because of the Console market (just like the PC games market) so the people who are left are the hard-core crowd who are willing to dish out the cash for a PC that will play their games as smoothly as possible. 5 or 10 years ago you could be a fanboy and just blindly go with ATI or Nvidia since the prices were so close for the same amount of performance. Now that has widened, and fanboys are feeling the sting ($100 or more in some cases) because they want a certain amount of performance and don't intend on looking at what the other team has.

Never said that ATI can outperform Nvidia in all games, I said they are a much better value. If you look at $/FPS ATI is well ahead of Nvidia, and is set to widen the gap with their latest releases. One card beating all others in all games and categories is not something that you're going to see very often (if ever). Saying one card is the all-out best is a matter of opinion. But the value of a card is something we can sort of decree. Right now it's in ATI's court. Maybe next year or later Nvidia will gain back some territory. I hope so since it's competition that keep these prices low the the technology moving ahead at full steam.