You make good points....
For the record, I'm not saying choose one or the other. I'm saying to use a combination for evaluation. There are certain things you can't see on film that you can see at camp. And there are certain times where a prospect's tape doesn't tell the full story of their capability or upside.
A great example of camp over tape is a guy like Baratti who doesn't play his project position in HS. If you didn't get to see him run blazing fast laser timed 40s or maybe show off his safety skills at camp... it's really hard to project what he can do.
A great example of tape over camp are guys like Perkins. He shows up like a 5

in combines but shows up like a 3

/4

right now on the field... which is why some really good schools will take a chance on him (Notre Dame, LSU, etc.) but overall informed guys like Coach D at ISD rank him pretty far down on our big board until he shows something with pads on.
All in all, I love All Star games where kids do practices beforehand. You get to see a combination of how they do in different drills against other elite guys AND a glimpse on how they perform on the field against "the best."