I thought the poll was pretty clear...for those of you voting on size of the phone, you're voting wrong..... the poll clearly show screen size preference. People prefer most the 4.5-4.7 inch screen size (I voted for that as well) it is the most useful size of screen and anything larger seems to have a diminishing return, but anything smaller and you start to cut out the "functionality" of having a large screen.
Regarding 4.3-4.5 and 4.7-5.0 in. results, they are also the second to highest (i'm ignoring the people who think the current iPhone is perfect - cause they're not thinking ahead to what will inevitably be a larger screen next year) because that is the step above, and below, the optimal choice of ~4.5-4.7 in (some think 4.7 is too big, some think 4.3 is too small, but both agree 4.5 is around good).
It has also been statistically proven that the most sought after phone (in terms of purchases made) are ~4.5-4.7 inch phones. Coincidence? Maybe
On a side note, apple will very likely shrink the bezels of the screen (IGZO in the iPhone will help with that, next year) and increase the size of the dimensions just slightly in so fitting a ~4.7 in. screen. But the phone is definitely going to be wider, so get over it. They're pretty much very likely to do a Moto X deal with the next iPhone.