Don't get me wrong Sako is good and Usogui is great. But I'd say Sako focuses more on outsmarting in the gambles that he writes while Fukumoto focuses more on the gambling nature of Gamble games. Plus the sheer amount of works and series that Fukumoto has written that focuses on gambling just puts him above Sako. Still love Sako and hopes that he makes Usogui 2