Please publish all formulas you use for speed. You clearly punish weight changes in riders exponentially. I changed my weight 20lbs and it was over 2 minutes on London loop slower.
Also, it’s clear you don’t use momentum at all. A higher weight rider should carry speed much easier on all sections of the course P=MV, especially when coming off a downhill.
So lighter riders don’t get punished on the downhills or having to have higher wattage on the straight aways.