Ol' Superman was epic.
It's getting a bit stereotypical to mix in the US army and USAF imo. Yeah it was enjoyable to see the Hulk toy around with them but... Superman is supposed to be the geeky looking guy in glasses who quickly can transform himself into the Superman, incase of emergency.
No one knows who he is, until that troublesome girl comes around.
Iron man is alright. Though it's kinda toned down to fit the whole audience.