If that's the logic you're using, though, Tyler Moore would be a 6.1 5* kid. Dude had offers from everywhere. I think it also has a bit to do with his "being committed to Nebraska" syndrome. This should improve as we continue to win.
TM still lacked offers from Alabama, Auburn, Texas, USC, LSU, etc. Really if you take away Florida & Ohio State - he is missing most of the big names that we all assume gets you that 5th star. I'll attribute it to early the early committement, but based on just his offer list he's no Tony Steward (6.1 5*) - so I'd say there is nothign wrong w/ using that logic.