Rakeback question for math nuts.

[normalcy]

Assume the following:

1) exact same rake structure at both sites
2) site A pays 30% rakeback and uses the "player contribution" method
3) site B pays 27% rakeback and uses the "dealt cards" method
4) both sites avg. 5.6 players per hand and 45% players to the flop
5) my play is VPIP/PFR of 26/17 and I go to SD about 33%.

given all of that, is it possible to compute which rakeback deal is more lucrative??