Input ranges are Modern Poker Theory's 6max LJ RFI and BB vs LJ calling.
Vs a cbet from the LJ, BB is calling 75 suited combos nearly 100% but folding 77 100%. Why is this?
Both hands are pairs (and a pair of sevens is of course better than a pair of fives) with similar draw potential to a straight. 75 does block a set of fives, but LJ is opening these at a low frequency.
Solver config.
LJ cbetting range:
BB vs cbet range: