MB by default isn't very consistent with it's sorting, or in the cases of numerical values, just does it wrong.
Some things seem to use the Sort As values, some don't. My Artist view is set by Sort Artist and displays things correctly, but the left panel text shortcuts display incorrectly under "Album Artist" with with the number 10 preceding the number 3. Setting the list to Sort Artist it displays the sort values instead of simply rearranging them. And it still doesn't correct numerical values, whereas the artist view does
Why by default the numerical sorting is just flat out wrong, I don't know. 10 and 10,000 should not precede 3. It's also annoying for classical albums or compilations where it's Symphony No.1, Symphony No. 10, Symphony No. 2 and Vol. 1, Vol 10, Vol. 2.
(I had an image for this, it's been deleted) Sorting by Album Sort as doesn't really seem to help either.
But I do have this, of which the sorting is supposed to be "Sort Album Artist/Original Year" But it just does... this instead.
Which is especially bizarre since it works for everything else.