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pgt: The problem (as I see it) with your proposal is that it doesn't just measure the speed of the player, it also measures the speed of the opponents of the player. With your proposal, a slow player that plays mostly against slow players will still be able to collect "fast player points" - his opponents aren't fast so it's easier to be below the 10% margin. A player who plays against fast opponents has to work a lot harder to get below the 10% margin.
I think it's the intention of your proposal that the second player gets ranked "faster" than the first.
(do skréše) Chce se tě zrovna valet rechlé špil, keré zaročeně skonči v pruběho dvó hodin? Vetvoř nabidko ke špilo a zadé tam Čas na špil: 0 dni 1 hodina, Extrovnica: 0 dni 0 hodin, Limit: 0 dni 1 hodina. (TeamBundy) (okázat šecke vechetávke)