+1. you make no effort to normalise the power at which everyone was riding. Roadies attack on hills to drop people, not riding steady state. in fact even if you’re riding normally it’s quite common to have power go up when riding uphill.
This is exactly my point, on a group ride/race it is easy to keep up on the flats when riding in a pack with or without the added advantage of an aero bike. On the hills where the pace is pushed the advantage goes to the lighter bike.
What races are you doing?
Ever been attacked (or have you ever attacked) at 50 km/h in a crosswind? That aero bike will make a difference. When you’re biting your stem in a gutter you’ll know just how much power gets pushed on the flats.
Ever been attacked (or have you ever attacked) at 75 km/h on a downhill? That aero bike makes a difference.
And at 20 km/h uphill the aero might make a difference too, but significantly less. However, even if you only save 5 watts, you’re now saving 5 watts for 20 minutes.