Ubisoft is the biggest offender, by far. As you can see from the ACIII, Watch Dogs, and The Division shots above.
They amp the lighting, eliminate evidence of pixels, remove collisions, fake the HUDs or remove them, add blood and particle effects, and many more unlikely setups.
At some point, a friend of mine was working on the team responsible for all Ubi Montreal's bullshtos. I found it fascinating that there was an actual team entirely devoted to this.