Apple is using their monopoly in online music distribution (iTunes) to force customers into buying iPhones. Seems to me, that's exactly what Google is accused of doing with search. They have a monopoly on search, and they're using that to push people towards their own services.
If Google must be forced to have their search engine bring up competitors products and services, why shouldn't Apple be forced to allow their iTunes customers to use the iTunes service on Android?
And if you want an even more direct comparison, this is the same EU that has problems with Google tying Android (Google's OS) to Google's other services such as the Play Store, Maps, etc... If the EU forces Google to offer the Play store services to OSes like Cyanogen, there won't be any difference.