i'll check it out tomorrow, about to sleep.
What i understood it as, no matter what your set/rep sheme is, train hard and eat well and results will come.
that's fine for gaining strength etc, but for athletic performance improvement there are other important factors such as peaking, gpp, spp, etc.. so rep ranges can have a pretty big impact on training, so to can body composition/caloric intake.
in terms of obtaining a certain level of strength, then ya that statement is pretty accurate.. if you're raising your strength (1RM) using a 3x8, 4x10, 1x20, 5 x 3, 1x5, etc, any of those set/rep ranges will work.. but those set/rep ranges all have very different adaptations by the central nervous system in terms of power production, more so in the short term.. in the long term, once a certain level of strength is obtained, most of those set/rep ranges just listed, and their effect on the CNS, become irrelevant, because the base is there & alot more time can be spent on improving power..
I personally like to make sure power isn't being neglected for most performance programs.. An example where I wouldn't care is if someone is doing a 20 rep squat routine to really bump up 1RM insane in 4-6 weeks, I wouldn't care if vert was dying/speed was dropping etc in this case.. if you get what I mean.
peace