position. Luke is also reported at 6' 10" if you are going to knock him down to his actual height (they all seem exaggerated) you should do the same for Karnowski.
Karnowski vs BYU last year
6.67 ppg
2.33 rpg
Karnowski season averages
10.4 ppg
7.1 rpg
Not all of that difference is from Luke but he did a decent job on him when he got the chance.