ComingSoon.net has posted an update which shows that Cowboys & Aliens topped The Smurfs for the weekend and that Captain America dropped to third:
Universal Pictures and Sony Pictures are both claiming their new films, Cowboys & Aliens and The Smurfs, earned $36.2 million at the weekend box office, making it impossible to determine which of the two films won the weekend until the final figures come in on Monday. We'll be updating this item once the figures come in, so stay tuned. What we do know is that Cowboys & Aliens opened in 3,750 theaters and averaged $9,653 per theater while The Smurfs debuted in 3,395 theaters and averaged $10,663. The former also cost $163 million to make, not counting marketing costs, and the latter was budgeted at $110 million.