since it’s mentioned several times there should be an improvement in the ranking, i’ll add a few useful links:
1: sassy sarah was the first one to mention about a better ranking and made up a possible new one (so credit to her about this link). sassy sarah’s ranking formula
2: since i agreed there are several points of improvement in the ranking since it only covers bankroll. i decided to also give it a shot to make a new formula. my (yiazmat’s) ranking formula
3: in real money poker there is also an existing formula called GPI. GPI ranking formula
hope this helps, yiazmat.