Do you mean by other students, or by employers? I have a feeling being an engineering major will be more useful for getting a job after graduation than an interdisciplinary studies major, but that's just how skills are valued in economy right now.
As for among students, it really doesn't matter. I'm in what most consider the hardest major at Berkeley (EECS) and some comment about it being hard, but that's about it. I know plenty of English, history, and political science majors and don't make fun of them or anything for having an "easy" major. There is definitely a perception that certain majors are easier than others, but I have rarely if ever heard people say they look down on certain majors.