I don't really understand why people want to see this as a "versus" relationship.<p>Machine learning is part of artificial intelligence.<p>I found both classes good, a different style, yes, but also a different focus.
And of course taught by different people, not better nor worse.<p>They all did a great job and because of the interactivity it is a way better experience than just posting the video lectures online.
The fact that the videos are short (instead of a full hour), it also helps people which don't have the time or energy to focus for a full hour.