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Hollywood joy: Box-office up 10% this summer 

This film publicity image released by Disney-Marvel Studios shows Gwyneth Paltrow as Pepper Potts with in a scene from
Gwyneth Paltrow as Pepper Potts with in a scene fromDisney, Marvel Studios via AP

The Lone Ranger may have been left in the dust, but Iron Man and the Man of Steel helped make this summer a box-office bonanza for Hollywood.

After a weak first quarter of the year, a big rebound this summer turned things around. Now the all-important summer box office season is wrapping up more than 10 percent higher than last year, on track to beat the summer of 2011's record $4.4 billion in revenue.

This was largely thanks to a calendar packed with big-budget blockbusters. "We've had 15 films that have done over $100 million this summer, compared with about 13 films last year, so it was a deeper slate than last year," said Eric Handler, an analyst at MKM Partners.

This summer's record comes despite some massive, high-profile bombs. Sony's $130 million budget "After Earth," grossed just about $60 million domestically, showing Will Smith's waning star power. And "The Lone Ranger," with Johnny Depp as Tonto, fell so far short of expectations that Disney announced it will take a write-down of as much as $190 million on the retro title.

But even with that disappointment, Disney is still finishing the summer the big winner, thanks to "Iron Man 3" and "Monsters University," the first and fourth biggest films of the year, together grossing nearly $2 billion worldwide.

And these two hit sequels are illustrative of a larger trend: The top six films this summer were all sequels, franchises or reboots, proving to Hollywood that it makes sense to double down on big budget hits.

This undated publicity photo released by Disney and Jerry Bruckheimer, Inc. shows Johnny Depp, left, as Tonto, and Armie Hammer, as The Lone Ranger, i...
Johnny Depp, left, as Tonto, and Armie Hammer, as The Lone Ranger, in a scene from the film,Peter Mountain / Disney via AP

Disney was hardly the only studio to capitalize on the sequel frenzy. Comcast's Universal cashed in on two sequels: "Despicable Me 2" and "Fast and Furious 6," the second and fifth biggest films of the year. Paramount benefited from the third film in the Star Trek franchise. "World War Z," which was not a sequel but is based on a book, performed better than expected and Warner Bros.' "Man of Steel," successfully brought that valuable Superman franchise back to life.

The studio at the bottom of the pile this summer was Sony. Both its "After Earth," and "White House Down" bombed. Not one of its films broke into the summer's Top 10.

(Read more: Disney: To Infinity and beyond?)

For all the studios, the international box office continues to grow in importance—those overseas returns, especially from countries like China are the key factors driving growth. And that growing focus on International ticket sales will continue to push the studios to make bigger budget films based on established brands.

"International audiences still like the big budget event films," said MKM's Handler. "If you're not going to have a big success internationally, you need to keep the budget small."

Which companies are well-positioned to capitalize on overseas growth? Handler pointed to franchise-heavy studios like Disney, as well as the likes of Warner Bros. Of the theater chains, IMAX is poised to capture massive growth. And China is where the majority of that growth will come from—with reports that the nation will have a higher box office than the U.S. by 2020, thanks to the addition of a total of about 3,000 screens a year.

Disclosure: Comcast is the parent company of NBC Universal and