We've had this discussion on the boards before. I'm pretty firmly on the side of the magic users. If nothing else because of the dementors. Remember the whole country was falling apart. Giants attacked towns and no one did anything. Imperio is also a literal perfect mind control spell. The right people under their control, and the whole resistance collapses. And no, they wouldn't just come out for the wizarding world and rollover, they'd just subtly sabotage any resistance. It isn't a fair fight. Sure, we have nukes. Until they've taken control of those and any non wizard filled city is radioactive paste.