Hm....
The first thing that came to mind when I read that was: "If I threatened to call megumi 'Tentacle Monster' until she reads the manga, I wonder if she would read it...."
Here is the concept, though it requires a little understanding of Legend of Zelda....
It means pirates are the same thing as ninjas, which means arguing over which one is better is pointless.
Not really mathematics, I just used the characteristics of one thing to link it the desired result. Like how it's possible to do the same thing with ninja and pirates. I'll show you the basic concept in a second.
By the way, yes, Princess Resurrection used dual wielding chainsaws first. Actually they are pretty rare in fiction, probably because of how insane you would have to be to use them.