Here is a Comparison between E3 demos and retail version of recent Ubisoft games:
Don’t only focus on textures or lighting, But instead on: animation, Characters, Level, physics, and Sounds. And you will end up like.. Wow..Not the same game.
Those footage are recorded in 1080p max on PC with a controller. E3 footage is of course set before retail footage.
0:26 Watch Dogs
2:33 The Division
5:58 Rainbow Six Siege
9:47 Far Cry 4
12:20 Far Cry 3
For more Watch the Video.