My understanding is that most of the restrictive Zune DRM has to do with the WiFi "squirt" feature. (Obviously this crippled what could have been the Zune's killer feature.) But iPods have no wifi at all; it seems silly to argue that iTunes DRM is less restrictive because it does not prevent you from doing things you couldn't do anyway.
Slashdot is linking another "Zune is dead story". The above is a comment on that thread.
Full disclosure: I've been primarily a user of Apple computers since the early 1990s, have owned several iPods, and currently own a MacBook and an iPhone. I do own an Xbox 360 but I've never owned a Zune.
The thrust behind the story is that, for whatever reason, the Zune has not made major inroads, and in these troubled times, MS might as well focus on what works reasonably well and what makes money, and that is Office, Windows, and the 360, and not the Zune.
Of course, why the Zune has not done particularly well is a favorite topic of conversation, as is the difference between the DRM schemes used by Zune and the Zune store compared to the iPod and the iTunes store.