I think this, as well as other results from the auctions, highlight the increasing evidence that the buyer universe is getting smarter about which watches to fight over and which to leave alone. I think 2-3 years ago, everything was increasing in value so quickly that there was a frenzy to buy / flip any vintage Heuer, Omega, Rolex, etc. As time has gone on, buyers have realized that not everything is deserving of a premium or even a five figure price tag simply because it's a certain reference or brand.
The golden rule will always be "condition, condition, condition." I believe results from the past year have proven that out.