I'll make it simple for you guys:

1. War Thunder: World of Planes developed by Gaijin who also developed Wings of Prey etc.

2. World of Warplanes: developed by Wargaming.net known for their World of Tanks

War Thunder is now in closed beta whilst World of Warplanes is in closed alpha (the one I'm in).

I was wondering why they only have an external view on World Of Warplanes after I swear I saw good cockpit shots of it;)