If Anthony Mackie is to be believed, the upcoming Captain America sequel will be the best in the series thus far. It’s not hard to assume that America’s hero will release a solo movie better than any of Thor’s solo movies, or more critically praised than, say, Iron Man’s offerings. However, both previous movies—The First Avenger and Winter Soldier—were outstanding in their own right, so it looks like Steve Rogers may be on the losing side for once. With the odds stacked against him, how will he prevail?

In an interview with IGN, Mackie, who plays fellow Avenger Falcom, said, “I feel the best Marvel movies thus far have been Winter Soldier and Iron Man. And I think this movie far surpasses those two movies. I think the Russo brothers and Marvel have done a very good job of upping the ante with every movie. And this one definitely does not fail to live up to that.”

The directors have certainly picked an impressive roster. Black Panther, Black Widow, Bucky Barnes, Scarlet Witch, Iron Man, War Machine, Hawkeye, Vision, Crossbones and Ant-Man all appear in the film. But the superheroes will be forced to side with Cap or Stark when the two friends take opposite sides in the Government’s attempt to regulate those who possess superpowers.

Unlike previous installments, there’s no clear distinction between right and wrong, and additional complexity gives the movie more gravitas.

“This is one of the first times Steve doesn’t know what side he’s on or what the right answer is,” said actor Chris Evans to Empire. “With the first Captain America [movie], I think we can all agree that Nazis are bad. The aliens are no good either, we can all get on board with that notion. This conflict is more mirroring than what we deal with on a daily basis, where it’s just different points of view. There’s no clear right, no clear wrong, and it’s hard for him to understand the right move.”

Captain America: Civil War will hit theaters May 6.