I would have given it to Day-Lewis as well. Not for adam sandler giving a bad performance, but the fact he was basically playing the same character he has always played but on a different level. Day-Lewis seemed to bring to life a character that he had never played before and if I was asked to believe in any character for effectiveness, it would be Bill the Butcher. Also, Punch-Drunk Love was filled with greatness all around it while Gangs of New York didn't even meet a benchmark of being a good film, but is recommendable just on the performance of Day-Lewis.
~rougerum