I'll just add that recruiting rankings are pretty flawed in itself. Also, not denying we need more, we absolutely do, at every position every year.
I want to say it was
@Cryptical Envelopment @DMoney @Cribby or someone who post often and is knowledgeable, that may have posted this, but if you look at the 4 and 5 star kids in, we'll use Rivals, is about 300 a year, which is higher then the number of all players drafted in 1 year! So of course half of the 1st round will be 4 or 5 star kids. They cast a wide net and say, look we got this person right (Greg Rousseau is a great example, he was a low 4 star 5.8 and only after he committed to us). So they were taking a flyer, but they didn't know anything about him, or his projection to a DE, simply were following the offers. Mind you, I don't think Manny knew he'd be that good otherwise his eye for talent would have been the same for all the other ends on the team.