I’ve never pulled on my brakes (stock sram red) and thought “Geez, these just aren’t powerful enough”. Maybe in the rain, but who rides in the rain?!?!?
It’s not about the stopping power it’s about brake modulation. I have a variety of campy, tektro, shimano and other brakes on my bikes and every single one be it a v-brake, dual pivot, side pull or otherwise can take a wheel from freely spinning to skidding in a heartbeat. The question is how predictable the braking performance is under a variety of conditions and speeds. Why is it when I don’t change the amount of power I’m applying to the brake lever that I can seem to brake harder or softer on a long mountain decent? (That’s a rhetorical question btw) Disc brakes bring far more predictability to the table, and I think with enough development they could be tailored for best performance and aesthetics in the roadie scene.
I think a greatly over looked part of braking is the tyre.
If you have a car with race spec brakes but tiny crappy tyres it just isn’t going to perform.
That’s the problem with roadies our road contact is about 23mm x 50mm x2.
Compared to about triple that with a mtn bike.
Like Dan said my brakes will stop the wheel in a heart beat, but will the tyre stop the bike probably not.