It does showcase some of the stealth gameplay, but the trailer feels orchestrated in a cinematic fashion - Does this represent how people will actually play the game? I'm not sure. It reminds me of FPS game demos where the player looks around the environment to oogle at pretty skyboxes, or stop to appreciate minor side-conversations from characters around the world. It's cinematic, pretty, and technically a way you can play the game - It's perfect for a press demo. It reminds me of the way the Division trailer kind of played out, sans the awful gamer speak.
Like, for example, who the fuck does this:
In a game?
Lol I spent many-a-minutes looking up and around at all the environments during my Gears 5 playthrough, taking them all in. We exist bud.