That is factored in. It's compared to same Q last year. Which was same situation. Except increased sales with new carriers.
One could argue that not as many people wait for the S versions compared to a new number. 5s vs 6. But new carriers and China will take care of that- if even an issue
At my work place we buy the iPhone 5c for all of our sales and field employees. We don't wait for the latest product but purchase which ever is cheaper. I bet other companies do the same. We upgrade our employees cell phones every 2 years.
China figures will be huge, the deal with China Mobile is only 6 months old and hey have over 800 million people on their books. Sales will beat estimates by a long way IMO.