Comparable houses in Seattle compared to metro Atlanta is a lot more than 30%. For reference, the area of Atlanta with both the highest average house prices and the highest household income is Forsyth County. The average house price is around $350K and the average income is around 90K.
a. That salary is not low. If you chose to run a family of 4 on one salary of 160k, it's your choice. It's still quite good.
b. If you discount 30% of the comp because you feel like it, I wonder how many of the 20 other metro areas are going to match up.