You shouldn't make up completely wrong claims to use as an analogy. The US grid doesn't run at either 110V or 220V, it's much higher. The 50/60Hz thing doesn't make any sense as an analogy either, because there's no significant advantage to either, it's just arbitrary.

You really should just delete your comment if you can't come up with a decent analogy, or edit it to eliminate the analogy that makes no sense whatsoever and makes me completely ignore whatever point you were trying to make. Maybe it's OK for some non-technical audience where they have no idea how electricity works, but this is supposed to be a technical crowd, isn't it? Or is it? Sometimes I wonder.