Iowa, Kentucky, Illinois, Mississippi, Wisconsin and Kansas have poachers.
They also have a much larger species of deer - Virginianus Borealis
that produce bigger bodies and hence bigger antlers - on top of having
tons of row cropping that significantly increases antler development.
A one buck rule in Alabama would not increase at all the size of
antler development of Alabama deer at any given age.
{I realize that Ky deer are really a mix of V. Virginianus and V. Borealis
put point remains for that State nonetheless esp. Western region where
the row cropping is}