Looked at the starters line for NU's last published depth chart and compared to Iowa's. Numbers are below. An extra TE were listed for each so I took the highest rated one. Note that the score of the November game was 56-14. I would say the conclusion is that Iowa has enough talent to match their investment in development and coaching to scheme. NU had more than enough talent to win or at least compete in that game, but lacked the preparation to compete. I think if you were to do the same for Minnesota, you would see a bigger disparity between putative talent and performance.
RR NU Iowa
5.9 1 0
5.8 3 4
5.7 6 1
5.6 5 7
5.5 2 3
5.4 1 2
5.3 1 0
5.2 0 4
NR 3 1
RR NU Iowa
5.9 1 0
5.8 3 4
5.7 6 1
5.6 5 7
5.5 2 3
5.4 1 2
5.3 1 0
5.2 0 4
NR 3 1