Lastly, here's a shot at 1360 x 768.
Only thing I can see are the textures on the metal. In one they are more detailed?
If what was said about Video catching the FXAA, then this makes sense.
From looking back at the others, this eems apparent as well. Some areas are more 'blended' in while the Screenshots were not. This may also be due to the FXAA. I really don't know how all that works.
I can definitely see this as an alternative to the traditional way of either snapshotting or timed shots...
At the very least, it may be an alternative. You lose IQ, but you managed to get every moment of an event and can hand pick which frame to take.