Suppose two people both know that the best course of action mathematically is to bluff. You conclude your opponent doesn't have much, but you have even less. A bluff is best. A bluff is profitable. But, it's very little help to you at all to know you should bluff if: you don't know how to make your opponent fold! John Smith still makes $15 each time this situation comes up. Let's now compare him to George Jackson. George knows how to give off a reverse tell. He knows how to trick an opponent into acting incorrectly via some mannerism or body language or inane table chatter. George executes better than John. George, in this situation, is able to play better than John. Great players find ways to consistently squeeze out a few more dollars from every situation.
Poker Math SkillsHandicapping a situation is only part of the challenge before you. Mathematically deducing that a bluff is correct is the easier part. Executing, succeeding, better than other players is the great challenge.