Why is Japanesse Quiz and Dragons considered a clone?

I really want to know why the Japanesse Quiz and Dragons is considered a clone? It has completely different playing, as well as way different questions. Being good at the American Quiz and Dragons isn't going to help you at the Japanesse version of Quiz and Dragons. There is a decent backlash for grouping/removing clones, so why did Zwaxy just go ahead and do it anyway? (Just wondering)

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