I agree. I also do not see good data one way or the other. Who knows. The "studies" that I have read seem very simple. Max power for 60 seconds, etc. Aerodynamic studies proving shorter cranks are better on 40k courses.
My 200mm cranks shipped today, to be mated to Rotor chainrings. I have a hill that I train on all the time. Interesting if my performance changes on it but more importantly to me is the potential impact on fatigue at Rando distances and speeds for this thrasher/masher.
Ok, then you'll have some data. Share it?