[Cheetah]

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How do you define your roi on "being better than half the field " ?

You cannot say much about your win rate if you're marginally better than half the people but you get annihilated by the other 50% . This is too vague to give a definitive answer .

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I agree. It is impossible to deduce a win rate even if somehow "better" could be defined. Here is an example to illustrate this point:

Say that in a MTT 50% of players fold all their hands, but say that Hero steals one BB per orbit, but otherwise folds like they do. Hero is definitely "better" than 50%, but Hero is still losing chips and will typically end up out of the money.

So being "better" than 50% can even result in losses [img]/images/graemlins/blush.gif[/img] In general, I don't think it is possible to make quantitative predictions based on "better" than X%.