Power Stunts can't be used at the same time as the primary effect.
(So, if you buy an Energy Blast as a stunt of Energy Control-Light, any effects you're creating with the Energy Control will shut off when you fire the EB and will have to be restarted next round.)
Extras don't have this limitation. That's why they're so much more expensive!
So the question isn't really 'Are these Power Stunts or Extras?' so much as 'Do I want to buy them as Power Stunts as Extras?'. Its reall up to you; some powers are recommended as Stunts simply because the drawbacks of having to restart some of the powers (like Energy Control - Light) are pretty minimal, so you're better off saving yourself the points and buying it as a stunt.
The caveat here is (per Steve) "the total cost of a power being added as a power stunt must be equal to or less than the cost of the base power (including its various extras but not including flaws). This may mean that the power stunt has a different rank than the base power (one of the reasons that this is more of an advanced option, since it involves more math)."
In this case, Energy Control and Energy Blast are both 2pp/level powers, so you can have EB at the same level as EC as a stunt, no problem. If you want to add an Extra onto the EB, you'll either have to Flaw it to keep the cost down, or buy it at a reduced rank.
Staff Reviewer, GamingReport.com