User blog comment:Mythical zoan fruit enthusiast/For those who want Luffy to have Mera Mera and Gomu Gomu/@comment-3402624-20130506234841/@comment-6920514-20130507000759

Luffy wouldn't have left Saboady if he didn't believe he and his crew were capable of handling anyone that might get in their way. He didn't just witness the Admirals' power prior to the timeskip but also that of the Yonko in Whitebeard and Blackbeard. Besides if the fruit falls into the hands of the Navy who have the strongest Cipher Pol division and an Admiral there then his fight with Kaido won't be greatly affected. Also, like CC mentioned this blog isn't about that anyway.