I do not see Vaaks as an upgrade over Ben. The only thing he can do or is willing to do is chuck more threes.
Now read closely. This does not mean he cannot learn to become a strong and valuable defender. Ben did, but Vaaks currently is not. That does not mean that he cannot become a valuable rebounder. Ben did, Vaaks currently is not. That does not mean he cannot learn to become elite at not turning the ball over. Ben did, Vaaks currently is not
But Vaaks likes to score and is a "pretty good" shooter. Can he provide 40% from the arc against B1G competition? We do not know, but we hope he can.
The point is if Vaaks can provide the contribution "to the team" that Ben provided this season, he will be a very good replacement. I am certainly not saying he can't be....but he currently is not. The fact is it would be easy to create a highlight film of Ben that would make you think Ben could not be replaced.
So my view of Vaaks is much the same as AS...show me on both ends....and Adrej certainly did. I hope Vaaks does also. And John Blackwell too while I am at it.