Whats up guys--

I realize all the implications of potentials and their different stages with different player ratings, but are the rates of growth different? for example, LP and PER seem to be easier to get the largest amounts of growth, whereas ATH has been difficult for several players to hit that higher potential. Is this a result of practice planning, or something more? 

rates of growth differ in various ways

1. LOW and PER grow faster with a given number of minutes - this goes waaay back to when they divided shooting into low and per.  Its like half a skill.  SO, it takes fewer mins to maintain or grow each.  Actually also seems right to me - shooting is something that a player can improve more easily than a bunch of other skills/abilities in my opinion

2.  any skill improves slower in the, say 0-15 range and the 85-100 range than in the middle range

Ath is part of conditioning along with spd, stamina and dur, and the minutes kind of get split up there. Like mamxet says, LP and per are faster