Actually mocap was in fact used but it wasn't used exclusively. A lot of big developers are moving to mocap exclusively to avoid the mess you see here. What EA did was use an animation algorithm tool to create animations to a specific level of quality. They would blend them automatically. CDPR did the same with the Witcher 3, they also used mocap, but they had a higher quality threshold for automated animations and added hand movements and then touched them up further by hand before release.

However mocap by itself is not the be-all-end-all for animations and faces. You would think that, I thought that, but it's wrong. WAY more work has to go into the tech to allow you to use it properly.

One such implementation can be seen for MGSV with the FOX Engine. You can see how they handled Quiet.

Since CIG has an open development policy on Star Citizen we can see how they are handling animations in much greater detail as opposed to watching just a promo. I have linked these videos before but it's good educational stuff on how this is done.

Here's where some of it stands today.

Here's Female Characters.

Here's character customization.

Here's the work CIG did with 3Lateral on faces/heads

Here's moving animations and how CIG is blending Mo-Cap to allow NPCs to do basically anything so in the end they can realistically interact with the environment from planets to ships to combat.

So as you can see it's not just shoot mo-cap and it's done. The scope of your game will dictate how far you push the tech that drives mocap in game. MGSV required so much work with its tools they never even finished the game after 5 years. I think we got about 2/3 of it before Konami told Kojima to release it and fired him even though the Fox Engine was done by then and they were just making content. CIG is in the same boat with Star Citizen. We are creeping up on 5 years in development and the tools/engine isn't near completion because the scope is several times that of MGSV.