"TF" is that this promo was made before a single cel of animation had been completed. That's why what little animation you see that isn't borrowed from other shows (such as Batman, as you noticed) is simple Flash animation. They just tweaked the model sheet poses to make them somewhat animated. One presumes that the actual production will be fully animated. I can't imagine even WB doing something with the WB name on it in Flash; they leave that for stuff under the Cartoon Network banner. Also, in response to the "questions for the Trembley Bros" post: I've been told that the Trembley Bros. were not asked to do this project; it was their idea that they designed and pitched to WB themselves.