for superpowers that require a move action, like forceblast, do you have to roll to break away?

depends on the action taken, but forceblast wouldnt require a breakaway

so only actions that actually require you to move physically require you to break away?

Unless I'm groosly mistaken, the only time you need to roll a breakaway is when you actually move.

The FAQ states So things like Barrier or Regeneration would not require a break away roll.

Though charge you do to make a breakaway. If the target is standing on a object and you want to use it on him.

Its becuase you have to move to pick up the object. Even though you dont really move.