iPhone 5 fails to meet analyst sales predictions, but what does this mean?

Coming in at 5 million units sold it’s opening weekend, the iPhone 5 still performed well under the predictions of the market analyst. Some set the bar as high as 10 million units on opening weekend. I suppose no one saw the underwhelming piece of tech coming, the numbers clearly reflect this. Or, are analysts given way too much attention with their weather man complexes?

I’d say this is a combination of both, what do you think?