Aright so I was messing in wizz and found this weird spot.

2 Big stacks BvB I'm the SB. The problem rises when I'm assigning the BB's calling range:

on 6% (88+ AJs+ AQ+) its an ATC push:

and on 9% (66+ ATs+ AT+) its a 20%+ shove:

Now my question is: How do you / How am I supposed to specify that the villain calls with 6% or with 9% of hands. Its so damn close and yet still the shoving range difference is 80%!

How do you guys figure this out?
Thanks for the advice,

EDIT: the stack of the button is 1500.