I'm not really sure whether it's true or not that Android doesn't have brand power. I mean, it's not as strong as "iPhone", certainly, and I don't have any specs to show, but I sure notice "Android!" on signs in front of cellular shops a lot... and there's a giant green Android robot balloon on the top of a little wireless shop just down the road. Even my non-techie friends say things like "Is that an iPhone or a Droid [sic]?"...
It seems to me, Android phones focus much more on the brand of the device than the platform it is running...
"Samsung Galaxy S II Epic 4G Touch"
Ads might mention mention Android but much more verbiage is about the device features and the like.
iPhone doesn't need this. RIM really didn't need this.
Windows Phone adds I have heard, Nokias are now known for running Windows Phone, I haven't heard many commercials for other device manufacturers. But, for me, I know it is an Android phone when I hear the ridiculous names.