I really don't have the expertise to be able to comment except perhaps on lots 100 and 101, the Heuer Bund chronos. Both appeared legit, and both went at about 1.5x-2x of what I would call the "market" price. As premier auctioneers commonly fetch premium pricing anyway and relatively speaking the actual margin is not all that significant, I have to say I'm not all that shocked by either figure.
As far as the "Omegamania Effect" I'm not sure I see that happening. Omegamania pricing was in some cases hugely outrageous (10-20x market on a few lots). I don't think I really saw any of that happening here.
Omegamania also had a huge media blitz, with commercials on CNN and even the manufacturer itself promoting the sale. People who hadn't even heard of Omega were aware of that sale; didn't happen here.
I'd hazard a guess as well that many of the buyers over the weekend might not often be in the Heuer market otherwise, and as such might not exert upward pressure on pricing in the future.