Not really... the link it talks about weight vs aero. i firmly believe it's all about the aero (unless you are doing a straight up 10% grade one way TT climb)- as you can build up bikes to be very light and very aero (they don't have to be mutually exclusive). i'm looking for quantifying of the aero aspect- specifically to frames. also- the frames S2 or even more aero S3 (per Cervelo's website) could indeed be more aero than many poorly designed TT rigs out there- as there are many design elements that seem to be used in the S2/S3/P3/P4- especially on the front end/downtub/top tube. But I'd like anyone that ever has seen, heard, any data to chime in and also pick apart anything that needs to be picked apart.