There was good news and bad news for "Pain & Gain" at the box office this weekend according to Film.com. The good news: Michael Bay's new comedy, which stars Mark Wahlberg and Dwayne "The Rock" Johnson, took the top spot with an estimated $20 million debut. The bad news: It's going to get absolutely steamrolled by "Iron Man 3" next weekend, as Marvel's latest superhero epic earned over $195 million in its international opening.

Boom.

And the feeling that this weekend was just the calm before the storm carried over to the rest of the box office, which was down nearly 20% from last year. "Oblivion" managed to hold onto second place with an estimated $17.6 million, but the new romcom "The Big Wedding" was a big flop, drawing just $7.5 million in its opening weekend.

For a full rundown of this weekend's box office figures, head to Film.com.