Joey Bosa is the top-rated collegiate defender based on the meticulous analysis of Pro Football Focus (PFF).  They have extensive video analysis, similar to what Kyle does on 11W, that shows how Bosa dominates in both rushing the passer and destroying the runner.

PFF on pass rush: "If you’re going to be a high-level edge rusher in college and then the NFL, you need to be able to actually win around the edge. Luckily Bosa can do exactly that."

PFF on run plays: "Bosa isn’t just a speed guy though, and what is most exciting about his game is his ability to play with power just as readily as he does with speed and quickness."

Here's the link to PFF article with videos:

https://www.profootballfocus.com/blog/2015/10/27/joey-bosas-dominance-is...