Crank lengths - make a difference?

All very scientific looking, but like much psuedo-science, they seem to be making the mistake of knowing the answer they want and tweaking the formula to produce it.

Think about it dude - looking at known facts and working out the maths behind them isn't pseudo-science, it's actual proper science.

In this case there isn't as precise formula as physiology differs so much, but it's good to have a starting point.