It comes down to fit and each team's individual evaluations, which can vary drastically from those in the media. Thus why I've always found 3-round or even 7-round mocks completely pointless.

I think you'll see both go in the 4th round at some point but it wouldn't shock me if Settle falls to the 5th. His endurance is a question mark and he still has a lot of developing to do. And, you don't have a lot of time to develop in the NFL. Most of these guys don't realize that. There are only 53 roster spots and if you can't fill a role immediately, you only get 1-2 years to prove your worth on the practice squad.