In not-at-all-surprising fashion, Captain America: Civil War ran away with the weekend box office, raking in a highly impressive $181 million domestically, according to Box Office Mojo. While down $10 million from the $191 million opening Avengers: Age of Ultron had last year, it's worth noting that the first Steve Rogers outing from Marvel, 2011's Captain America: The First Avenger, made just $176 million domestically over the course of its entire box office run. Clearly, people have warmed up to the story of Cap in a big way.Of course, there were estimates that claimed Civil War was easily going to rake in that coveted $200 million opening, thanks to the inclusion of Tony Stark/Iron Man in the movie, but it seems there are limits to such hopes on a film that doesn't feature the word "Avengers" in the title. Either way, Civil War outperformed its biggest piece of superhero competition, Batman v Superman: Dawn of Justice, in a big way (nearly $20 million), considering Batman v Superman opened up with just $166 million at the domestic box office... and that was with the aid of the Easter weekend holiday.This Captain America: Civil War clip lives up to the hypeAs for the rest of the slate, The Jungle Book managed to pull in a very respectable $21 million domestically in its fourth week of release, landing in second place, while the aptly titled Mother's Day took the No. 3 slot with $9 million dollars domestically. In addition, The Huntsman: Winter's War came in at No. 4 in its third week of release with a take of $3.5 million domestically.Sadly, the highly anticipated theatrical debut from Key & Peele's Jordan Peele and Keegan-Michael Key doesn't seem to be faring too well in the long run. Keanu took a massive hit in its second week in theaters, dropping to just $3 million in ticket sales, down 67% from last week's $9.4 million.Needless to say, the big winner this week is Marvel. Now the question remains as to whether or not that success will carry into next week. (Spoiler: It most likely will).