The best you can do is try and vent as much air to the center of the rotor (if it's a vented rotor) since it is trying to force the air out the veins. What my unit does is push air to the center and on the caliper side of the rotor to try and get some additional cooling to the caliper (minimal but anything is helpful). The only two things I've experienced that have warped a rotor is water on a hot rotor, and stopping the car with very hot brakes, and sitting there with your foot on the brake thereby heat soaking the one spot with what is coming from the pad.

I have not heard of cooling both sided equally making a difference.