The title was changed to Avengers Assemble for the UK audience, despite being called The Avengers in the US and other territories.
Asked what the reasoning behind the change was at the UK press conference today, Feige joked: "We thought, 'Wouldn't it be nice for our English fans to give them another word?'"
He went on to discuss the change more seriously, admitting that "decisions like that aren't made lightly".
The Avengers is released in UK cinemas on April 26 under the title Avengers Assemble, and hits theatres in the US on May 4.
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Photo gallery - view images from The Avengers below: