No pressure for you Francis for the simple fact that you go so fast that you see much less yaw component than us mere mortals, so you only get the 2 to 2.5 seconds per km gain. Plus, the ROT that gives us those time savings is based on something like 24 or 25 mph average speed. Again, you go a lot faster...so, less gain for you!
I'm thinking that all things equal, you should see at least 1.5 to 2s per km.
BTW folks...when Francis says "that very same P2K", he means THAT VERY SAME P2K. Guess who I bought the frame from :-)
http://bikeblather.blogspot.com/