He has a ton of analytical factors that say he's the best RB in this class. The biggest ones that I look at are:
- breakout age: capturing the backfield when you're a younger back over older, more developed competition, is strongly indicative of being a good player at the next level. Etienne broke out at 18, Harris at 21, that's a huge difference;
- receiving market share: good NFL backs need to be able to catch the ball, Etienne is in the 86th percentile all time;
- speed score: weight adjusted speed, being an NFL RB requires a level of physicality that isn't necessary at all positions. Here, ETN is in the 80th percentile.
Etienne captured the job earlier, is a better receiver, and is likely faster adjusted for size (we don't have speed scores for Harris bc he refused to run). He's also a full year younger than Najee so his best year didn't come when he was 23 years old against a bunch of 20 year olds.
I'm not a huge film guy. I think Najee's film is great (Etienne's film is also very good), but I usually weigh the analytics first and those are very strongly in Etienne's favor.