Trying to take that much away from a spring game is a big, big mistake. There are lots of things going on. Coaches are trying to look at guys situationally. They're trying different combos. They're trying borderline parts of the playbook. They're challenging guys. They're setting guys up to have success while others are being set up to "fail" to see how both react.
I hope West is good enough to have 5 sacks in a game. But I strongly suspect he was playing against an OL combo or situation that favored him. Playing "tag" with the QB is also a pretty big advantage for the D.
Again, trying to draw too much out of a scrimmage is a mistake. Ainge's Jr spring game still stands out in my mind. He was awful the year before... then he was awful in the spring game. Crompton otoh looked good. We just didn't know that they were being challenged at different levels. The next time we saw Ainge he lit a ranked Cal team up.