Its only a "test" in the minds of people like you that don't understand the market at all. It is a forgone conclusion to be a massive win for those who do.
I believe it will easily outsell the iPhone 5S. YOY iPhone sales from Sept. 20th 2013 to 2014 will total something like 35% iPhone 5S sales, 65% iPhone 5C & 4S.
Well so far, this person who "doesn't understand the market at all," was right about the 5S outselling the 5C.