A tourny thing isnt a chance thing, its a competition for god sake LOL
I think its stupid when players leave a tourny or wont enter it, just cos best player is in it. Everyone is human and makes mistakes sometime. And I am happy when I get to a final against a player like that.
If you are bothered by a certain player winning all the time, then just stick to pleasure games.
You dont see F1 racers not entering a race for a prize etc, just because Ferrari always win. see what I mean?

Normally the winner would give a prize to a pawn or knight anyway if they are a Rook etc already, so whats the problem.