As you know, Brandon Routh played Supes on Superman Returns. He recently talked to Red Eye ahead of Chicago's Comic-Con, and mentioned Henry & Man of Steel:
BR: (laughs) It’s interesting, you know? Thankfully it’s been - I’ve had a lot of time - seven years out of the suit I guess. I had my time and it was great. Although I haven’t seen the film, it seems like Henry (Cavill) has done a nice job. He certainly looks the part. Another thing I guess that makes it easier is that the suit doesn’t really look like my suit (laughs). And that made it a little easier to distance myself from it I guess.
You can read the rest at Red Eye, including how Routh ended up joining forces with other Supermen for the funny video below.