I would like some clarity on what Pro Poker Tools hand rankings mean.

I know it's addressed in some other threads but I'd like to focus on just that here.

The basic question is how or does the hand ranking correspond to a percentile strength for the hand?

For example, KhTd7s2s is cited buy Emty as a fold in the BB defense vs SB portion of the course This is a spot where one should (GTO baseline should :)) defend 56.6% of the time.

KhTd7s2s is ranked 81 in the 6 handed iterative.

KhTd7s4s is ranked 52 in the 6 handed iterative.

Does KhTd7s4s become a defend?

And if that is all true (ignoring nuances) this suddenly sounds like a fun over/under betting game.