Of course, Apple also counts SHIPMENTS in their sales announcements. The seven million (see below) iPhone 5S sold include the millions sold and still being shipped to carriers and other retailers.
Also, if you want to count both the iPhone 5S and 5C together, then you'll also want to count the Galaxy S4, S3, Note 3 and Note 2 together.
Yes, apparently store exit polls are indicating that the lines are mostly for buying the top-of-the-line iPhone 5S, not the 5C.
You bring up an interesting comparison, which is confused this year by hiding the old model in a new plastic case, and by the lack of presales for the 5S.
For example, last year, the iPhone 5 got two million presales in a day. Those presales were NOT counted in the first weekend sales figures, because they haven't been delivered yet.
Apple is smart. By not having a presale this year, they got people to line up and buy from the stores, which means more sales that can be announced right away, instead of being a not-delivered-yet count purgatory.