It's possible. One thing though is that I feel blitz is actually better for older players. The main disadvantage of age is that it's a lot harder to concentrate for long periods of time in the game. And it gets harder as a long tournament/match progresses. I think we've seen that with Anand. Even Kasparov himself before he retired was starting to draw won positions and lose some drawn positions.
I figured coming in Kasparov would be far from a pushover here, he could easily finish top 2. If he was playing these guys in a triple round robin of classical it probably wouldn't go well.