Oh boy. Gonna be a lawsuit. Looks like the Samsung chip being 10% more efficient is going to get and extra hour or so of battery life and be a little quicker. We need to figure out how to identify the chip based on the info on the box so we can cherry pick the good ones from the bad crappy ones.
http://9to5mac.com/2015/09/28/a9-samsung-tsmc-speed/
You need to have some reading comprehension skills. The article says "perhaps more power efficient." No one has been able to test this yet, and a die shrink doesn't automatically result in a linear reduction of power. One author's speculation doesn't mean jack.