In terms of D2 Basketball, there isn't really a difference in skill.
Ball handling is equal
Passing is equal
Shooting is equal
The major difference is size and speed.
That guy shooting the lights out in D2 is 6'0-6'2 while his D1 counterpart is 6'5+ with a quicker release.
That guard you see with the incredible handles at D2 is 5'10 while his D1 counterpart is 6'2+ with a much faster first step.
Was talking to a College Coach the other day that watching a HS game I was attending watching a few players. One of those players parents point blank asked the coach if he thought he could make it at the D1 level. The coach's response was "He's got the skill, but he's got to grow. Everything he's able to do is something every player in D1 can do at his position. The difference is they're doing it at 6'8 and he might be a touch over 6'0."
You can work on your skill all you want, but if you don't have the D1 size and speed you aren't going to be successful no matter what your skill level is.
As for Bagent and football, the thing he's got working for him is he does have D1 size at 6'3, 215lbs. Does he have D1 level arm strength and quickness (not necessarily meaning foot speed or quickness but the ability to read defenses fast enough to match the speed on the field at that level), Idk? But, I guess we are gonna find out if he makes the jump up to Maryland.