I find it more interesting how it actually took the tone of an entirely different game. Not only did it take the tone, but it also happened to actually be part of the story of the other game.votemarvel said:Perhaps the facts are in dispute here but it really would explain how the ending took on an almost completely different tone to the rest of the game.
Deus Ex:Human Revolution
The other game actually built the entire plot around getting to the same point as ME3 did, and it worked.