I can't help, but feel that the video undermined the Spit's abilities. For the plane that helped defend England during the battle of britain. It sort of made me feel the Spit's were out classed. Plus it looked like that the 109's had clear shot's at easy targets for a while there. Just my opinion on the video. I mean I'm no Luffbery, but it looked like the 109's had a clear and easy shot. (as easy as you can get when trying to shoot a moving target.)
Now that you guys mention it that was cgi. It's funny now that you point it out it's almost abvious, yet at the same time not quite.