for all the talk about pressures, it is sacks that have the most impact. This guy does not show that
Sacks have a very small sample size and tend to be noisy. DEs in college might rush the passer 300 times a season... it doesn't take much of a fluke to get from say 6 sacks to 8 sacks. A blown assignment here, a QB scrambling into a defender there.
Pressures are a higher volume stat and are thus more reliable. They also correlate better with NFL success better than raw sacks totals. DE who takes 300 rushes at the quarterback and gets say 60 pressures is showing a consistently higher-level ability to beat blocks than a guy with 40 pressures. He isn't fluking into anything.
Chop had the 9th highest pass rush win rate in the nation at 20.9%... that's a pretty typical number for 1st round DEs. If he's getting off blocks that often, the sacks will come.
Also just as a segue, TFLs are an extremely predictive stat. They have a small sample size like sacks do, so you'd think they'd be noisy, but they correlate really well with pro success. My best explanation is that to get a TFL on a run play, you pretty much have to beat your man instantly, so dudes with lots of TFLs are consistently showing that ability.