It's going to have to with the amount of marketing they spent on this movie.
I bet you they spent more on marketing than the production of the movie.
Actually, it seems like Disney is being pretty smart with money when it comes to marketing the movie.
http://variety.com/2015/film/news/daddys-home-top-commercial-ad-spend-1201656759/
The latest installment in the beloved saga saw an estimated $5.5 million spent, bringing its lifetime total as of Dec. 6 to $16.9 million. (The figures count only for the 11 official trailers the studio had in national TV ad rotation last week).
Why so low? Star Wars is gaining TV exposure in the form of show integrations across Disney-owned networks and is setting a new high mark for co-branded promotions, with 16 brands creating 34 unique ads promoting the film for an additional spend of over $40 million to date.