5S is much more in demand than the 5C. Pretty good, I say.
I would imagine that they can make tons of 5c phones while the 5s may be more problematic. So the balance between the two may be more even than it seems. (Also, I would be really interested whether the 5c or 5s is the more high margin device. I could imagine that at least for now the 5c has a higher margin than the 5s – well, at least the 16GB 5s.)