[Lucky Clubs]

Assuming we can't see Hero's cards, how clear is CO's decision after the flop raise? Maybe it's a silly question, but can somebody show me the numbers so I understand better?

From what I see, CO has invested $26 before Hero raises. Yes, once Hero raises, CO must pay $54 for what is at best only half of a $162 pot ($81). But if he's 65% to win the high on the turn, then that works out to $52.65, slightly less than the $54 that he'd have to invest to win half the pot. If Hero would do the same thing with A234, then CO is nearly 82% to win the high after the flop, which works out to about $66.40 of equity in the high pot.

I guess my question is, at what point is it worth it to defend half the pot, even if you know you are being freerolled? It seems to me that Hero's hand and 2356, 2357 are the worst case scenario for CO.