Surtain was considered the most ready for the NFL, same as Mac Jones for QB's. Long run can be a different story.
Surtain reminded me of Byron Jones, solid and steady but not sexy, Horn might be better in the long run and is proving that in the short run as well as he's playing and Surtain got benched. And the jury hasn't even taken a lunch break on Fat Boy Boss Man Sing-a-Song.
The other element to that is the D they played on in college. I do not like drafting Bama D players, hell they have a defense most years as good as half the NFL defenses. Felt the same way about LSU back then. Claiborne and Spears played on a better D in Baton Rouge than in Dallas.