I'm afraid I'm rather dogged. as i have said, front brake = 75% stopping power comp to back. This is because it is nearly impossible to skid a front tyre, and when skidding you're not braking terribly efficiantly.
you're comparing apples and pears.
whether the front brake has 75% stopping power compared to a back brake has no relevance to the comparative stopping power of a front brake versus a fixed rear wheel. it's a completely different thing! a fixed rear wheel can apply much more stopping power than a rear brake, and i would say it's equal to the stopping power of a front brake with an experienced rider.
and if you insist on applying stopping power to only one wheel, it's much more stable applying it to the back than the front.
you're comparing apples and pears.
whether the front brake has 75% stopping power compared to a back brake has no relevance to the comparative stopping power of a front brake versus a fixed rear wheel. it's a completely different thing! a fixed rear wheel can apply much more stopping power than a rear brake, and i would say it's equal to the stopping power of a front brake with an experienced rider.
and if you insist on applying stopping power to only one wheel, it's much more stable applying it to the back than the front.
that make sense?