TDT does better, yes. My apologies; I'd forgotten the manuscript hasn't yet been released to the public. It should be soon, I think; it's been in the review process for a while. If for some reason Eliezer changed his mind and decided not to publish it then I'd be somewhat surprised. I'm guessing he's nervous because it's his first opportunity to show academia that he's a real researcher and not just a somewhat bright autodidact.

There was a decision theory workshop a few months ago and a bunch of decision theorists are still working on solving the comparably much harder problems that were introduced at that time. Decision theory is still unsolved but UDT/TDT/ADT/XDT are a lot closer to solving it than the ancient CDT/EDT/SDT.