Lenght master is on top of the shelf of intensity. So it is used by advanced users. I have gained with the lenghtmaster. But i also used:
sg
Bm
Pf
Manual
Heck even my own exercise.
So for me stating that i gained x amount from
LM would be a lie as there is other things influencing my gains.
And we don't lie at
MOS.
So you must understand. That the amount of users only using
LM is few.
Which makes it hard.