^ Well said.
There's also a misconception among people here that the Jaguar doesn't compare favorably against the Piledriver core used in Trinity APUs, whereas the truth is that, in terms of IPC, both CPUs are in the same ballpark. In fact, at low clocks, Piledriver needs more power and more chip area to reach performance that is similar to the Jaguar. Therefore, a Jaguar core has better performance per watt.
And that's just when talking about AMD's own version of the Jaguar. Sony's own engineering has gone into the PS4's APU, and it is a custom design.