I'm definitely not trying to suggest they spent $100 million on advertising!$100 million...on what marketing? They got the TGA slot that was apparently a surprise to the team as much as anyone, so I doubt they paid all that much for that...and then the game was undermarketed if anything because the game was meant to be a quiet release before that slot.
I'm just trying to suggest how much they could spend on a 100-strong dev team for 4 years. $100 million on development sounds like something they could easily have spent, and why not in the $150 million region if they went large? Then the $200 million total budget estimate could be a heavy overestimate, etc.