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There is one more problem i think - money. If a "good player" playing for guaranteed win - he plays with low skilled players that mostly play with little bets and don`t want to loose big money. In this situation a "good player" spent too much time for wining too small money. And playing in the tournament with good money he is playing against the same "good players" without guarantee to win.
Your win is never guaranteed, ever, you know this, right?
As of what poker player can be called a "good player" there's no consensus on this matter, but imo a good player is someone who can outplay most of the great players from the past, because they were not evolving during the past years, and thus have got their strategies outdated.Outdated strategy may be interesting if the new player don`t know it. But i can`t say how true is it. I have to google some such games/tournaments firstly.