With a graduate you get:
Shallower learning curve
Not enough ability to take discipline
Career compression
Probably serious girlfriend therefore unwillingness to deploy
Useless knowledge about Geography, Law, Fashion, basket weaving etc
Greater expectation of wage etc therefore more disappointment
"Maturity", if by that you mean set in their ways.
Rubbish! I learned faster as a graduate; I picked up the BFJT and AFT courses much quicker than I remember picking up anything when I was faffing around as a 19 year old. I've not spotted many graduates interested in the military who can't take a bit of discipline, and serious girlfriends?? Who marries the girl they're with at 20 during a degree?
Career compression? If my direct entrant mate and I serve until 55, you get an extra tour out of him. I'm sure that won't be an utter career stopper if a graduate has what it takes.
Greater expectation of salary is fair enough, but I don't think many of us are disappointed with it; I'm very happy with what I get paid.
And I know nothing about geography;

but I don't think there's much wrong with me wanting a decent degree from a decent university to start using at interviews if I ever have my eye poked out in the bar
You can generalise anything; but I'm pretty certain that I was a much better bet through Linton and beyond as a graduate than I would have been as an 18 year old. You only have to look at the number of hedges I woke up in at uni to know that .....