A legal definition is something else as a lingual definition.
The word moped literally is an abbreviation of the words motor and pedals. It's an old word and most laws are old. As old as when there were no scooters.
It's not our choice that your state describes your machines as motor and pedals, they chose that description. It doesn't make it necessarily true.
Anyway, we don't help you because we can't help you, not because we don't want to. We don't know anything about Chinese 4-stroke scooters, as we are into vintage (60's, 70's and 80's) and modern 2-stroke motorized bicycles.