Betting that turn has to be good b/c he should have to fast play his sets on that board. Therefore on the turn he either has a 33-QQ non set hand that he should fold to 2 barrels or a much smaller range of KQ/QJ/AQ that he probably isn't folding. It also helps to merge your 2 barrel range b/c usually we have so little equity when called when we two barrel here.

As for the OOP spot, b/3bet AI against aggro players is good b/c you still have some FE. Against a passive pansy, b/c the flop is fine, probably c/f a bricked turn I guess, all depends on bet-sizing though.

Also, I don't have a copy of PNL, but I've heard and read a little bit about pot/stack ratio in the past.