The thing I liked most about that episode was that Moriarty stopped being an evil mastermind when he got real intelligence, found a way to gather the important people in the room with him, and just laid out what it was that happened and asked the questions he needed to to get the information he wanted, like everyone is constantly yelling at characters in shows/movies to do. He cut through all the nonsense, and immediately made friends from enemies.

It just shows how writers make “smart” people dumb.