Freescale seems to mention IoT only because it is the buzzword du jour, there doesn't seem to be anything that makes this new chip particularly IoT oriented. It doesn't even have any built-in internet (or any network for that matter) connectivity, which is kinda important for IoT.

In comparison Atmels use of IoT in that case seems more justified by the fact that they are marketing a solution with network connectivity. And imho the integration of connectivity and microcontroller is far more significant than 15% reduction of already ittybitty package size.

Freescale's IoT angle has been delivering the cheapest MIPS per watt. IoT isn't all about wireless communication in their eyes - you also need a capable data acquisition and processing system that can run on sub-milliamp power for long periods of time.