One thing I noted during the trailer. It was stated "Inspired by Actual Events". Not based on, not depicting a historically accurate time line of actual events. Inspired by. Meaning....the movie was INSPIRED by the history and deeds of the Tuskegee Airmen. Knowing that, I will watch the movie as nothing more than a shoot'em up movie with airplanes instead of horses. A tribute to the men who flew with Red Tails...yes. An accurate depiction of their service...no.
About the CGI...well, it's 2012. There aren't that many flying Mustangs, B-17s, 109s, 262s, or German Navy destroyers sitting around just waiting to be used for making movies. In the absence of real planes, cartoon planes had to be used. That is a fact. No getting around it. Unless someone knows of a 50 acre parking lot of WW2 aircraft in flying condition, and pilots enough to fly them on the edge of their flight envelopes, you will just have to accept that any and all WW2 theme aircraft movies will be composed of CGI flight and fight scenes.
OBIO