I think air control should not be PL limited as it provokes an opposed roll (Str or Dex) not a save. (Similar to a grapple check.) However ...
I think the explosion extra would allow air control to trip many targets simultaneously. From UP it is probably a targeted explosion meaning it will be stopped by glass walls, doors etc but will effect characters with some kind of concealment.
I think the explosion extra would allow air control to trip many targets simultaneously. From UP it is probably a targeted explosion meaning it will be stopped by glass walls, doors etc but will effect characters with some kind of concealment.