Ultimately, magnification is not just about the lenses. You also have to factor in the camera resolution, as well as screen size and resolution for the viewer. I'm looking at this thread on a 15.4" laptop, someone else may be using a 26" monitor, the images are going to be different sizes depending on this and screen resolution, thus effective magnification is different.

Does yuzuha post here? She had this all explained a few years ago, but it's not something I know all that well.