First of all: that's a cracking clip, thanks for posting the link!

Now, a bit of criticism. What is that tracer smoke about? I'm pretty sure it didn't look like that, and I think it is a bit of a stupid way to make the dogfights more "visually attractive".

Also, I don't like the virtual camerawork. All those impossible camera angles and pans really just help to underline that we are seeing computer generated images. This is especially jarrng in the sequences with the German bomber. It would have been much better to add the effects of a "human cameraman", i.e. less than perfect panning and less steady images. As it is, the believability of the clip is very low, it looks and feels more like a video game than the real thing. Strange that they didn't work on this in an otherwise very professional-looking production.