I think dcstep is right to a certain degree. I believe there is a 'right' and 'wrong' way to play. If you are playing the 'wrong' way, you can practice an awful lot and make little progress. Of course the right material is part of playing the 'right' way. It is different from person to person. The BE method is about finding the 'right' way for you to play. If you are playing on a poor embouchure for 2 hours a day, it would make much more sense to make your embouchure more efficient and only practice for 1 hour a day. Just like it'd make sense to practice for 2 hours efficiently, than 4 hours inefficiently.
Just my $.02.