Theater owners have long begged Hollywood studios to program their big tentpoles year-round versus creating a glut during the prime summer months — considered May through July — and year-end holidays. That especially applies to the big superhero movies, the ultimate summer popcorn fare. They got their way big-time this year as Marvel Studios and Disney took the plunge and launched Captain America: The Winter Soldier in early April and Guardians of the Galaxy in August. Both movies scored the top openings of all time for their respective months, or $95 million and $94 million.