I agree that that can be helpful...but then if you use the last season averages to predict this season's minutes, like ECTYA did, you're comparing apples to oranges. You've got to be consistent.
I was aware of that actually, when I was posting it. But since my main point in that post was to show the difficulty of having 6 big men who all can play and contribute to a degree, I just chose to ignore it.