Yes I do reward them alike. Many of my CSAs are much better and doing very well. Overall, I am benefiting from both, so I won't feel much difference, because:
1. I get commissions from their sales and purchases.
2. They ask me questions, share their experience, giving me knowledge and expertise.
3. They assist me in many ways and vote for me where it is required.
So working as one body and respecting and rewarding all alike makes a big difference.