I'm not stretching your point at all. Your argument is that Apple cannot have a problem with the quality, otherwise they wouldn't be "doing so well" (i.e. selling as much as they do). Hence you parallel sales figures to quality. And that, Amanda, is the McDonald's argument.
You seem to intend to compare Apple, a company known for iconic design and good usability to a fast food company with low quality. Why? What are you trying to proof?