Only just got brave enough to stick my nose into this thread, as I am still trying to understand the opening post
Anyhow, I am with
Final, 3 Greens on the matter of accelerate/stop distances.
For instance, what about an SEP with a magnificent power/weight ratio, but only the bog standard brakes, that are fitted to most light aircraft. If it accelerates like s@#t down the runway, why is it guaranteed to stop in the same distance?