FWIW, I'm not naive to suggest this doesn't happen at college games... of course it does. I will say however, that I got to the majority of ASU home games and I have never once witnessed anything close to this.
I've been to several UofA games and again, have never seen anything close to this. And I've been to games at Boston College, Michigan, Notre Dame, Penn State, USC, UCLA, University of Florida, University of Tennessee and several others... and have while I have seen some minor pushing and shoving (at a USC game it was actually a bunch of girls), I have never seen anything close to the level of inhumanity as this, as well as several other similar incidents I've seen at many other NFL stadiums - including UoP!
If anyone believe this isn't a bigger issue at NFL games versus college, I'd love to also talk to you about some awesome oceanfront property you can gave in Missouri!