[sledghammer]

If you look at HU play at the end of a sng, its pretty easy to see the difference between unexploitable and optimal play. Sklansky even went on a huge rampage one time because some cardplayer author recommended using unexploitable HU strategies when you don't have a read (which is terrible advice, since unexploitable is only best against perfect opponents, of which there are few) and claimed that Harrington had made a mistake. It was quite a thread; lots of sklansky smack talk.