n00b question about Pokertracker and Party MGR

[dtbog]

So I get the feeling that PT calculates rake differently from PartyPoker's MGR calculations.

My affiliate tells me I've generated $x in rake this month... but Pokertracker only has $y, where y << x.

(I play cash games.)

I went and did a little poking around, and it looks like Pokertracker does the following: add up all of the pots that I won and sum up the amount of rake that was taken out.

It looks like Party MGR does the following: for each hand in which a rake was taken, divide the amount of the rake by the number of players who were dealt hole cards. Add this amount of the MGR for each player.

Am I correct? Anyone have any more knowledge about this? Is there a way to set up PT to display the MGR instead? Is the MGR calculator in PokerGrapher accurate?

Thanks for all answers, complete or partial.