On paper they look like a world class athlete who doesn't have the capability to achieve academically.
This has been told to me throughout my entire career- You're only as good as your paper trail says you are.
All boards are paper boards. Everyone knows folks who have gotten a P or two because they didn't follow the golden path, or because their leadership didn't give them the right kind of paperwork, or because of a velvet dagger, or whatever have you. That's life in the military- is it not?
You're not wrong though; I had a low GPA when I came in (2.9) and have one okay for myself, all things considered.
However, the only reason I got in was because in 2008/2009 the Marine Corps had a huge plus up in manpower. Even then, I don't think someone with a sub 2.0 is going to get into OCS off the street.
BTW- the only place where boards aren't simply who's paper trail is better? The Guard.