No, I don't find it insulting in the least. Why, do you? If so, please elaborate, because, frankly, what I do find insulting is the stigma that people place on video games as something of a lesser medium than film or television. At the end of the day, the Arkham games were arguably more important than Returns, to their respective medium.
They proved that you could make a top notch, high quality game using licensed characters and that there was more to offer than the simple cash grabs people had become accustomed to. Returns, historically, was a mixed sequel that, arguably, ushered in an era of subpar to terrible Batman films. That isn't to say I don't love the film and the design, but it's of no more importance than the Arkham games.