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Pft! Or the ambiguity was intentional.
Tstr is referring to the fact that some riders may be faster on frame A while others may be faster on frame B independent of the CdA of either frame on its own. In the same way that I tested faster with a giro than a lazer tt helmet, even though many people get the opposite result. So no not psychological, but I’m sure there was research saying people in red sports kit outperformed people in other colours, but I wonder how reproducible that work is and what the effect sizes are. I’d guess small but I suppose that is what marginal gains is all about.
P.s. there was also a study about the effect of motivational/de-motivational messaging on sporting performance. There was a podcast somewhere that joked about adding demotivating slogans to the back of cycling kit to distract opponents in the peloton.
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ewanmac
You might be right for the wrong reasons. While it's possible that one or the other is faster for everybody, it's also possible due to frame interactions with the rider's body that some people will be faster on the T1 while others are faster on the 464.
Back at the dawn of evidence based aeros, when dinosaurs walked the earth, I understand that some riders on the first gen Giant TCRs tested faster with the blade seat post while others tested faster with the round one.