like ive said many times, the demographic of people who would buy a 5C do not buy iPhones on launch weekends. They buy iphones when their contracts expire which can be anytime between now and the iP6. Those people are price conscious, not feature-conscious.
So you can't really judge launch weekend sales of the 5S and 5C and say the 5C is a flop.
A friend i know just 3 months ago bought a 4S in lieu of a 5 because she didn't need those "features"
I don't think so. My secretary bought a white 5c, has had it for 2 days now and loves it. She came from a Samsung galaxy and is now bugging her husband to switch to an iPhone as well.
The 5c is a very nice phone, and is quicker on the draw with Siri than my 4S. The build quality is very nice and tolerances on it are also very good.