I recently added the rake stats to my general overview in HM3 and it seems like I am paying way less rake on Pokerstars Zoom than I expected. On Zoom NL2 I payed 4.27bb/100, on Zoom NL5 5.09bb/100.

Can this be true? I am starting to doubt my HM3 stats since this is far below the estimate that rake calculators give us... E.g. primedope estimates that NL5z pays about 11.2bb/100 per player.

Could you cross-check how much rake you have been paying on Stars?