The key to remember here IMO is that full game cutups are more truthful than highlight reels. Fans get used to highlight reels, and if they don't watch a lot of cutups of full games or full games they aren't used to seeing all the mediocre decisions and plays most players make. I could put up tape right here of some guys who went quite high, like Landry, and you'd be like "WTF!?" because there's a lot of snaps where the dude is cruising.
IMO the real talent in evaluating players is being able to account for the players around them, coaching/scheme, opponent, etc and still use that snap to snap stuff in conjunction with the background stuff to paint a full picture. We got him at the 231st pick for a reason, basically.