In the screenshot section...

[Noir]

The close ups are certainly not from any trailer; they might be from very early versions of the 3D engine (RTW engine). If you have played the historical campaigns in MI you'll notice in the Nobunaga one that he is depicted as a cavalry man holding a torch in the night; essentially the animation is that of the RTW:BI cavalry man in night battle that was introduced in-game 4 years later.

Generally speaking CA has always used the "next generation" graphic/engine in the intros of the game they have released ever since MTW. In the MTW intro you can see the RTW siege towers with a single man climbing the ladder. Also an early Rome vs Gaul trailer of RTW contained quite some of the "advanced" M2TW fight animations.

Noir