FWIW a 26" with 100mm cranks is fairly highly geared for a unicycle compared to their default setups. Consider a 36" generally ships with 150mm (yes, people use shorter but that is typically the standard crank length they ship with).
(36 x 12.7)/150 = 3.05
Thus the 26" with 100mm has a higher gain ratio. Which makes sense to me. I am typically as fast on 26" setup like that, though it also helps that that is my favoured and most used setup.
