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I think you're oversimplifying and getting this wrong. If you look at the questions OP put in his original post, a full set of data for a tournament is going to provide much more meaningful data than just gathering from a few people.

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I have yet to see tournament data that gives chip counts for every player at each break, as well as the other data the OP is asking for such as number of players remaining at different intervals. Full tournament histories from PP can tell you what place everyone finished. It does not list everyone's chip counts at each break. This is where your idea is flawed as this data can only come from individual players.