I don't see it as a "low" at all. There are different forms of marketing that must take in to account the product in question. When was the last time you sat and watched a software commercial? How well did it stick out in your mind? What did it convey in 30 seconds? The earlier posters are correct in stating that these commercials are designed to remind Windows users of the hell they've become used to and to convey that it isn't necessary.
Unlike a brand new, never before seen, "hey what's that" kind of product, many people already have a computer. That's what makes the Get a Mac ads more effective than the "switch" ads. They are touching on things that Windows users find normal that you just don't experience with a Mac.