Marvel’s “Ant-Man” punched above its weight at the weekend box office, debuting with an estimated $58 million, while Amy Schumer’s “Trainwreck” also opened strongly with $30.2 million. The result for “Ant-Man” didn’t match some of Marvel’s better known and brawnier properties. But the relatively inexpensive superhero movie with a $130 million budget — still dominated North American multiplexes, edging out the little yellow guys of Universal’s “Minions,” which took in $50.2 million in its second week.
