The probability of btoh is 0.01% and after analysing (before announcement of jackpot) each archive database, we found that probability of hitting both is in average of 0.01% exactly as it should be... The reason why 99.99 jackpot normally goes sooner is because default selection site is to Roll Over to win, and jackpot requires the bet with 99.99 or 0 to be a winning bet. So when jackpot is to hit 0.00, only the number of people who intend to hunt jackpot switch to roll under mode.