Of course!

But intangibles like "heart and work ethic" are much, much, much harder to quantify. You just can't easily identify the Jake Groves, Corey Moores, and Danny Coales of the world in HS - if intangibles factored into the star ratings, then they would have each been 5* recruits.

And Danny and Corey, despite their amazing productivity in college, still didn't project well for the NFL because of lack of speed (Danny) and size (Corey). So in the end, you give star ratings based on the tangibles.