When superheroes meet, they always introduce themselves with a fistfight. Captain America was trained by our great nation to punch his way through every misunderstanding, and Wolverine deals with confusion by jamming knives through the back of its head. It's crazy, but even crazier when you consider how most of these people are just athletic men and women carrying some kind of gadget. Hulk bench-presses 100 tons and attacks everyone like he thinks they're a Thor. It seems absurd to think all those misunderstandings got cleared up before Hulk landed a shot and an unexplained pile of meat landed hundreds of miles away.
Back to what I was saying: Even outside of mind control or robot duplicates, it's not unusual to see superheroes fighting each other. So if you were to, say, put fellow good guys Black Bolt and Captain America battling on the cover of your comic, we have no reason to believe you're full of shit.