You shouldn't go so much on what tech sites says. Most people who are frequenting those sites/blogs aren't the same people that buys an iPhone. Tech interested people vote on such polls and those people are usually Android or WP users, everybody else uses iPhones. That poll doesn't mean anything to me, iPhone will sell in droves for the foreseeable future but come 2 generations of WP8 handsets and we might see some bigger shifts in marketshare. These things don't happen overnight. I think though, this line of Lumias will definitely do better than the last, I'm certain of it. Since Nokia and MS don't have the marketing genius and such a large core of hardcore users as Apple they'll have to rely on word of mouth and it will take some time.
Also, in these discussions I'd like to point out that hardware spec will never sway an Apple user nor will it sway a non-Apple user to get a WP. Only us tech interested care about numbers and figures, "normal" people want to know what they can actually do with their phone and that's where Nokia and MS have a real edge, you've got the fantastic Nokia apps, a camera that -IMO- will revolutionize the way people think of and use a mobile camera, a mobile camera that isn't just about useless megapixels but you can actually take non-blurry pics with it in low light conditions. It cannot be mentioned enough or overestimated how important the camera of the 920 will be for sales. WP8 will be just as important, something fresh, something personal, easy and seamless to use and features that haven't been disclosed yet.