1. Mixed reaction depending on if the opposing candidate has a physical condition like Bell's palsy. The ad wouldn't be successful.
2. Good attack ad. Poll surges.
3. America isn't the little brother with a superpower neighbor so the circumstances making that ad are considerably less likely. In a Democratic primary it would be considered an unnecessary attack against a doomed candidate from the left wing fringe. In a Republican primary it would be like running an ad in a bible belt state (or Utah) successfully uncovering that their opponent is an atheist.
This, although #2 would be edited down to 30 seconds in America.