450m and 450b

Optimal Modulation is 25% in all categories, so that spread is good and designed to be that way.
The link in the last photo, -51.5, 43/43 SnR, the modulations are great, and that is exactly what you should see on a high quality link.
The Receive Fragments Modulation are best when there is 25% in all categories.

Check this post for Cambiums detailed explanation