[stevepa]

If your Won Money at Showdown when you Bet/raise is 80%, that means that when you get called, you win 80% of the time...There's no showdown if they don't call. The Went to Showdown tells you how often you're called (or fold after betting).

Regardless, shouldn't you win at showdown substantially more than 50% of the time you're called? In general, the WORST hands you bet on the river should win 50% of the time they're called. There's also all the times you bet/raise the nuts or another strong hand on the river. (This obviously neglects bluffs and some exceptions when you're out of position but I would still expect the optimal W$SD when you bet/raise to be >50% when called)