Regardless of whether it's 'enough' for what most people want, the majority of consumers are going to comparre specs side by side and say 'That one's better, I'm gonna get that' Screen size, megapixels, memory, the actual real life results don't really matter to (or at least aren't going to be investigated by) a lot of people. Make a phone that runs single core when everyone else is running dual core, and their adverts have told everyone this is better is suicide, regardless of whether that single core phone does everything four times as fast..