If that was true we'd all be using 190mm cranks for the highest leverage. People are always posting about how much better short cranks are so I wanted to see if I notice a difference. If not i'll probably just use 175 in future as theyre cheaper (i got my brand new in box 7710's for 90 quid)
I was wondering if the small weight saving is negated by not having as much leverage on the crank.