Originally Posted by burnthesheep

Results using the parts being debatable, this statement ignores contractual obligations involving said teams or individuals.

I'm not super convinced of the whole replaced derailleur cage and massive jockey wheels. But feel like at least the Ultegra/Dura Ace wheels are better, and perhaps if you don't shift much replacement wheels that are just a hair larger might have the slightest effect.

The reason in TT sometimes it isn't a thing is the huge wheels mean longer cages and longer cages means less aero. The SLF style cages can re-balance that loss. Perhaps.

But's a pretty weak argument to make to say "this or that person don't run it so it must not work". I'd instead lean upon all the inconclusive data that's out there.