Considering how Guardians and Agents of SMASH looked, I have my doubts Film Roman or Studio Mir worked on those shows. If they did, then whatever studio they outsourced too to finish the animation basically butchered their work (which, from what we have heard from storyboard artists who work on the cartoons, isn't too far-fetched).From what I gathered
Film Roman worked on "Ultimate Spiderman", and "Hulk and the Agents of Smash"
Studio Mir worked on "Guardians of the Galaxy"
Man of Action worked on "Avengers Assemble".
Man of Action is not an animation studio, they're a writing team as far as I am aware.