In the battle between the entertainment icon of Britain and the entertainment icon of the United States, it looks like the winner will be chanting "U.S.A."

At least for this week.

"Captain America" opened to $65.8 million this weekend, taking advantage of a 72 percent revenue drop for "Harry Potter and the Deathly Hallows, Part 2" in its second week to win the box office battle. "Deathly Hallows" earned $48.1 million in its followup to its record-breaking weekend, and is still on track to become the highest-grossing film in the franchise. That means it would have to surpass the $317.6 million earned by "Harry Potter and the Sorcerer's Stone."

So far, "Deathly Hallows" has earned $274.2 million, according to CNN.

"Captain America" stars Chris Evans in a story written by Christopher Markus and Stephen McFeely, based on the comic books from Joe Simon and Jack Kirby. It has opened to some strong positive critical review, and is expected to have staying power for a few more weeks, although buzz is really starting to build for "Cowboys & Aliens" from Universal Pictures, which opens next week.

That film, starring Daniel Craig and Harrison Ford, was screened this past weekend at San Diego Comic-Con, and has received some very strong reviews from those who attended.

It's still far too early to tell what will be the biggest movies of the summer, let alone the year. "Transformers: Dark Side of the Moon" leads the way with $325.8 million, followed by "Deathly Hallows" with $274.2 million, according to Box Office Mojo. "The Hangover, Part II" has grossed $252.2 million domestically followed by "Pirates of the Caribbean: On Stranger Tides" with $238 million, and "Fast Five" with $209.1 million.

Genre films at the top of the list include "Thor" at No. 6 with $180.1 million followed by "X-Men: First Class" in 10th place with $144 million.

"Super 8" has earned $124.2 million while "Green Lantern" grabbed $113.9 million.