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Also, since ICM assumes players of equal skill (please tell me if I'm wrong) then even given 100% accurate read of your opponent, don't you need the difference to be more than it is in the example to make the call correct? Is there a way to modify the ICM given that you are a X% ROI player?
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LinusKS started a thread about this very issue. It didn't get very far; this is a tricky subject. To answer your questions: 1) probably. 2) not really (yet)
A bit more on question 1: even if everyone were equally skilled, the difference would need to be more than it is in the example for calling to be definitely correct. When it's that close, the ICM numbers are pretty much inconclusive, I think.