so, if about 1/2 of the teams play a 3/4 they count all 3 linemen as interior defensive linemen and the 2 DTs in a 4/3. That would be 80 interior starters. Of course, that would leave only 32 "exterior" DE starters to be ranked, which is unlikely.
but, 15th out of 80 is good. 95th out of 80 starters is bad.
Overall, 37 out of 80 starters MIGHT be considered above average but when you consider that teams pass more than they run, he goes back to average at best and more likely slightly below average.