I don't think you can give absolute value to many hands in a vacuum. TPTK is playable for stacks against a maniac fish, but is probably worthless against a super-weak-tight villain that suddenly starts firing bets/raises. Which is just a more complicated way of saying "less spr more handreading", I suppose.

Also, your theorem falls apart when considered in the light of actual SPR tactics. When you hit TPTK on the flop, you want the pot to be as big as possible before any flop betting begins.