.....to do the full stunt pattern in style...?

The Old Timers would say that a competitive FOX .35 Stunrt Plane should be 40 ounces or less.
I've never flown competitive stunt and never questioned that rule of thumb...until recently I plugged the numbers into a static thrust calculator and found that a 10 x 6 APC spinning at 9500 rpm produces 41 ounces ..!
Now back in the day they didn't have APC props but they had some wooden props that I believe would have been pretty close.
So....it looks like having a 1 to 1 ratio is a good place to start when you do most of your flying over concrete and asphalt.
What sort of ratios are the modern day competitors working with...?