There are plenty of pitchers considered better than a number 3 pitcher with only 3 pitches. There is nothing typical about a number 3 pitcher other than over the course of a season he doesn’t have as good of results as some pitchers but is a lot better than most. I guess you and the OP must not have looked at the starting pitching to the the large sinkhole;.
Austim Martin going into last season was rated higher than Lewis. Same position, same athleticism.
Having starting pitching develop is far far more important than Lewis, and Martin