NFL draft "Analysts" are like NCAA "Bracketologists". They provide click bait educated guessing / speculation. Don't get too worked up about it.
Edit: He should be retired by now. Mel's own words.
https://www.sbnation.com/nfl/2018/4/19/17226834/mel-kiper-jimmy-clausen-nfl-draft-bet
That's exactly what it is. He got in it at the right time and for whatever reason ESPN and everyone labels him as a talent evaluater, but never coached or played.
It's the same Lunardi and Palm, their hit rate isn't great at all. Clicks, that's it.