XP Passup

So I was trying to find a chart or formula for vassal xp pass up. Not that I understand it but I found this on AC's official forums and figured I would just copy and paste it over her for anyone that would like this information. Feel free to comment on any corrections or anything.

The XP passup formula of Xerxes of Thistledown

The Passup XP from vassal to patron is calculated as follows:

NOTE: Extensive testing has been done over a period of 4 months to verify these results.

Generated% - %XP to patron of vassal's Earned (hunting) XP

Received% - %XP that patron will receive from his vassal's Generated XP.

Passup% - %XP actually received by patron from vassal's Earned (hunting) XP.

Generated%= 50.0 + 22.5 * (BLoy / 291) * (1.0 + (RT/730) * (IG/720))

Received% = 50.0 + 22.5 * (BLdr / 291) * (1.0 + V * (RT2/730) * (IG2/720))

Passup%= Gererated% * Received% / 100.0

where,

BLoy = Buffed Loyalty (291 max)

BLdr = Buffed Leadership (291 max)

RT = actual real time sworn to patron in days (730 max)

IG = actual in-game time sworn to patron in hours (720 max)

RT2 = average real time sworn to patron for all vassals in days (730 max)

IG2 = average in-game time sworn to patron for all vassals in hours (720 max)

V = vassal factor (1 = 0.25, 2 = 0.50, 3 = 0.75, 4+ = 1.00) (1.0 max)

The Generated% is what is reported on the allegiance panel.

The Passup from grand vassal to grand patron is calculated as follows:

NOTE: While, I have done very little testing on grand vassal XP Passup, I would speculate that the equation is similar to

vassal Passup:

Generated2% - %XP to patron of vassal's Passup (grand vassal) XP

Received2% - %XP that patron will receive from his vassal's Generated XP.

Passup2% - %XP actually received by patron from vassal's Passup (grand vassal) XP.

Generated2%= 16.0 + 8.0 * (BLoy / 291) * (1.0 + (RT/730) * (IG/720))

Received2% = 16.0 + 8.0 * (BLdr / 291) * (1.0 + V * (RT2/730) * (IG2/720))

Passup2%= Gererated2% * Received2% / 100.0

where,

BLoy = Buffed Loyalty (291 max)

BLdr = Buffed Leadership (291 max)

RT = actual real time sworn to patron in days (730 max)

IG = actual in-game time sworn to patron in hours (720 max)

RT2 = average real time sworn to patron for all vassals in days (730 max)

IG2 = average in-game time sworn to patron for all vassals in hours (720 max)

V = vassal factor (1 = 0.25, 2 = 0.50, 3 = 0.75, 4+ = 1.00) (1.0 max)

Passup% * Passup2% / 100.0 would be the %-tage the grand patron receives from a grand vassal's Earned (hunting) XP.

..........

The formula is a little long, but it's very simple math. Just fill in the variables and calculate like any other expression.

For me the hardest part is remembering exactly when each vassal swore to that patron. I've done some controlled 

experimentation with this formula and it seems to be accurate, although I only bothered running the numbers for 3 or 4 months.