Watch 'Game Over: Kasparov and the Machine' for a good description of what I mean. And yes, I bet many people here hate that movie. That's exactly what I'm talking about.
There are a lot of relatively simple chess programs that can beat most amateur players. Personally, I cannot beat the Go program I have on my cellphone. (I am pretty horrible at the game.) None of that seems newsworthy. And yet after 5 wins against a pretty strong (but not world's best) Go player, and it's suddenly a "breakthrough" that changes everything.
If some new chess player have beat Deep Blue 4 to 2, would we revert the perceived status of AI to what it was before that match with Kasparov?
I'm not saying this advance in AI is unimpressive. I just don't see a fair evaluation of what it means. There is too much one-directional hype.