At the next level, he'll be rushing against the best of the best every down. KVN is not someone like Clowney who can destroy an OT and drive right through them. If you watch a lot of his highlights, his sacks come primarily in two ways. Either he blows past the OT or TE with his quickness and is immediately in the backfield wrecking havoc, or there's a delay while he gets slippery and slides off blocks to get into the backfield.
Sure there were occasions when he bulled his way through a tackle or TE, but that didn't happen with regularity. As he moves to the next level and plays against the best OL in the world, it will happen less. He'll have to rely on quickness or the ability to shed blocks. It's a matter of physics. He is significantly smaller than the OL he's pass rushing against. In the NFL, it won't be unusual for him to be giving up 100 pounds to an OT. He wasn't able to consistently blow up a tackle in college by driving through him a la Clowney. He won't be able to do it at the next level. Fortunately he doesn't need to rely on pure power. He has the quickness and uncanny ability to get slippery and slide around blocks.