Of course the active PSA and CSA should be treated the same as they are aprt of your team. Please remember that you earn 15% of the purchases made th the CSA and why then would you not want to encourage them even more by rewarding them to continue strong with SFI as whatever they do you will all cash out on their activities/purchases.
BE SMART look at your taem as a whole and not just concetrating on you PSA.