That's an extreme example but it carries through to so many facets of equipment choice. Helmet testing for me was all within 4-5 watts. The fastest helmet tested, I subsequently bought 2nd hand for £150.
Nope, wrong again, you just asked if I'd done any testing. But as you said, this is a pointless TTF argument - and you have spent way more money than I have on testing so you should continue to feel you are right about everything.
From my post above