The numbers are all off. There was a 31 player tournament just now. looking at the charts, payouts start with 5th place. however, 7th and 6th got paid out too.
secondly, the distribution percentages are not up to the current settings.

The pot was 31*500=15500 + 10k bonus = 25500.
First place won 8925, which is 35% of the pot. Looking at the charts, that share is only paid out at 43-49 player tournaments.

Now, looking at all this, I can't say if it's a bug or whether ryan changed the payout plan. Either way, something needs to be fixed.