Yeah, because the overall talent levels on ND's vs SU's are so close. SU recruits over 5 star DE's every year.
I'll try to make this simple. At ND he's just another guy competing for PT with similarly talented guys.
At SU the starting DE's are 2 and 3 star kids that are limited in ways and the starting outside LB's are a converted WR that is maybe 215 and a sub six foot kid from Ga that has trouble playing in space. I'm sure he would have the same struggle getting on the field here as he does at ND.
Chandler Jones and Justin Pugh were 2 star kids and first round draft picks. Your point makes no sense. How they are rated in HS means very little, you should know better than that. I don't think ND has a great talent level. Look at the the last ten years. Other than last year( A lucky fluke) they havent been that great. SU would beat them this year and I think they would have last year as well. ND isn't Clemson.