NETs in Korea don't do nearly as much work as they would in their home countries. I'm willing to say the politics are about the same anywhere, but the administrative work is pretty much non-existent for NETs. Actual time teaching and time put into preparation for class.. etc. depends on an individual basis, but generally speaking, we are expected to do a lot less.
If you are comparing teaching in Korea with teaching back home, then I think it's a fair argument to say that expecting the profession to be the same is definitely giving a false impression. However, if you compare teaching English in foreign countries, particularly Asia, I'd say it is a pretty accurate impression. The difference is the professionalism of the employers and co-workers.
One of my personal philosophies here is that, "There's the world, and then, there's KOREA." It has yet to be proven otherwise. HAHA