Not to be picky or anything, but you forgot to mention that Monroe is not a very good offensive rebounder.
Actually, I did. That was the third paragraph.
Also on the freethrow disparity between Hawes and Monroe. Monroe did play in 3 more games than Hawes, which could explain a little of it.
What I was talking about was free throw rate, not totals - 100*FTA/FGA. By dividing by the number of FGA, you take out the dependence on minutes/games played. In fact, the disparity is, if anything, more striking when you look at FT rate, because at the same time that Hawes was getting fewer free throws than Monroe, he was attempting more shots.