You can use
The next step of performance network to distribute the traffic and test the different brokers (26 templates available already) and see the different in $$$. Send the traffic from Germany to company A and US traffic to company B makes a big different in income.
Create zone > Place zone information of broker > send 100.000 views to each one and compare.
Or place your own banners based on country / device and send them to your favourite sponsor and the rest of the traffic to the brokers.