So on the scale the 25% 50% and 75% are not correct ??? I know how to figure these percentages ie. a 200 yard club at max , would be 100 yards at the 50% line given zero conditions, I am not sure about the lines in between , if not linear looks like a lost cause correct, unless we have a math genius here that can figure what to use!
Its been answered a few time now, but I would suggest going to practice mode on kiawah where you can get some shots at almost even elevation set up for low winds. Use the mulligans and see where 50% on your meter gets you using different clubs.
I understand why you would think 50% = half club distance- but its like taking a 400hp car and saying it will produce 200hp at half throttle.
It just does not work the way your thinking it does.