Motion blur in this game is applied center. To recreate you go into f2 and pan camera vertically while looking at the wings and the blur effect basically makes the wings look like they are moving forward and back rapidly. (Not talking about wing flex when pulling Gs) Focus on the sidewinders and tail on the two screenshots which was a fast up to down pan. The second one was done outside of dcs with mvtools.
Considering the mvtools screenshot was done only with video and no access to motion vectors/depth buffer the internal motion blur could be alot better. First one is DCS, second is MVTools.