So.....
1-(A) = The frequency we need to call to stop villian auto profiting from bluff.

I'm a bit confused with how the related to the pots odds we need to call.

Eg.
Villian bets Pot on river.
A=0.5
1-A = 0.5

So if we want to stop Villian auto profiting we need to call 50% of the time.
But using Pot odds we only need the call 1/3 of the time or have 33% equity vs his range.

So we get to a river and our hand that is at the bottom of are top 50% of hands has less than 33% equity vs his range.
Do we call to stop him auto profiting from his bluffs or fold because we dont get the correct odds??

And im confused.... Can anyone help explain.