Difficulty lying in your complete dismissal within your first post. You stated that it was "random guessing" and to that I simply simplified how it wasn't random for you. And that it could be something as simple as that. I even finished off with saying that it may not be true as of now but it's probably the most logical thing going. There's not 2 flaws. There's 2 assumptions that make it all fit. And they're not outlandishly made in order to do so as it's not illogical to think pheasant = bird, rooster = bird, thereby through association that would equal 10. If Kuzan (2 different versions) equal 20, which are the same person at the end of the day, then it would be 20 / 2 = 10. Which fits the signs of the Chinese Zodiac in being a bird = Rooster. See the logic. It's not been mushed together or anything and there aren't 2 flaws, they are simple assumptions. To which Monkey D. Luffy, and Yellow Monkey, both by association have Monkey. If this was an equation in writing, you could swap the word monkey for X and it fits your world perfectly. So they aren't two different variable with the same value. The variable is Monkey by association, not their pictures. It does fit without making up or concluding just to make stuff fit, it's pretty sound and simple reasoning.Above and beyond by using basic, logical reasoning? Apparently pointing out the similarities with the Chinese zodiac is normal, but pointing out the differences is above and beyond?
You just tried to justify a flaw in this entire zodiac thing by turning one animal into a completely different animal just because it's convenient. You then tried to cover another flaw up by giving two different variables the exact same value, something rather highly illogical for an equation.
What you're doing is going above and beyond as instead of trying to solve the riddle, you tried to smash it into a zodiac-mold it doesn't fit in and then pretend it fits while it's spilling out on two sides. Who's being difficult here?
And as I said previously, it could be wrong, but it seems to be the most logically correct so far.
It's not some huge conundrum, University Challenge algebra question or anything like that, this has been posted in a magazine involving Japanese comics.