I've been noticing lately that when ever i win a duel some times my rank goes up in number (i.e. 2000 up to 2110). This meaning that because i just won a duel that now I'm even further away from 1st place. Naturally though, when i lose, i go way back. Yet, when i win, i only increase a small amount.

Does anyone know what goes into account in the rank? examples being deck type, surrendering versus losing, final life points at end of duel, opponent, ect.