It's a little early to know for sure what Jackson and Grill are or aren't. About the only thing you can say for sure is that they weren't ready for the minutes they're getting now. They're true freshmen making a huge jump up in competition, and it shows.
Legit players can play as freshman and not look lost and scared. Should be able to find better players. They need to. Can't really afford to wait until Grill and Jackson are Jr/Sr's.