Very good point - problem is that some folks think their objectives are the same, however their results are different - so, who is correct?
Why does the answer have to be in binary format? There are always variations of success when it comes to meeting objectives, especially when trying to measure results of human performance in specific areas. Humans are all tailored differently and performance measurements related to specific common objectives will be affected by more variables than one's training methods. So it's not surprising that different people will achieve different results even though they have the same objectives and train in the same manner.