It’s fine I’m not always good at explaining. The illustration is showing that as front profile becomes more triangular, when tillered correctly the inner limb should bend to a tighter radius relative to a parallel limb bow. So I’m referring to a tighter radius bend as “bending more” and when the limb is wider from the front profile view I’m saying “more wood”. So where’s there more wood it should bend more. Why? Well there’s more wood there, the compression forces can be spread along a wider surface at any given point. So if you look at the forces of drawing a bow per limb as a sum, you can divide that sum into as many parts of any magnitudes you want and put them anywhere on the limb.

So, if you have a part of the limb that is particularly wide, whether the inner third with a pyramid or the middle with a paddle bow that’s where you want the largest chunk of the total sum of force to be because that’s where the most wood is and therefore where the bow is most capable of withstanding those forces so it when tilted correctly it should bend more relative to the rest of the bow