The cockpits in SoW are definitely 100% better than WoP, as are the aircraft details and from what I have seen I think the dynamic lighting and water is better too (I've played WoP). The only thing that WoP has over SoW now is the excellent terrain, with a great feeling of being "alive" really adds to the immersion, but covers a small area. I'm not too concerned but I would like to see a demonstration of SoW in HD with full Dx11 and full details, I know it's work in progress but its been 5 years
I'm going to buy it anyways of course, but I think its about time we got to see another video.