OK whew ...read all those pages. 
When it comes ti recreating main characters in the CC.
Its hard to do so. Why? Most gaming companies have a special CC to create important characters. Allowing the designers more control over how the character looks. The same can be said for the lower body. Sometimes one designer will create the whole character while other times, one designer will create the head and another will create the lower body. It all depends on how they choose to do it. Thus these characters are given unique features that are not available in the CC we use. Basically think of this way, they use a powerful CC and we get the low end version.
As for Motion capture. No they did not use it for this game. When they relaunched the Tomb Raider franchise they used it for that game, but not this one.
Generally voice actors are taken into a booth, and are given a a computer screen attached or near their mic. The monitor will tell the actor what line needs to be said and how to say it: angry, scared etc. Lets say a line calls for to be angry. The voice actor will then say the line and if its not right they repeat until they do so. Some companies will use the voice to screen option. The voice actor has a monitor in which he/she can see the scene play out with the character they are voicing. Then they use that as a means to get an idea how the character should react.
After seeing videos of the voice actors in action, it sounds like they were just given a screen with their lines and how to react. Thus have to repeat until the lines are acted out correctly.