I can't even fathom trying to trace back the thought process that led me to wondering this so I won't try.
Sailor Moon & her pals. I know there's a trillion books, cartoons, etc but let's keep it to the US-issued DiC material and core five scouts. What's the biggest Marvel Universe (or DC, if it pleases you) threat they could take on. As I recall from a million years back, most/all of their threats were from some other dimension so it was always "Monster appears, Shoot it with energy beams, monster returns to previous world". Could they have blown up a tank? Stopped a Godzilla attack? Would Magneto and five random A/B-tier mutants walk all over them or be routed in minutes?
Ummm... asking for a friend.