Fantastic plugin, first of all.
It seems that while numbers wo/ commas get sorted correctly,
2 ahead of 10
numbers WITH commas do not:
10,000,000 ends up ahead of 20,000
Strangely, 10,000,000 does not end up ahead of 2,000. So it's not treating numbers as words. There's a bug somewhere.
Do you want help finding it? I just learned how to use github. :)