User blog comment:Kaido King of the Beasts/Chapter 836: Man of a Thousand Pounds/@comment-80.216.39.36-20160822173118/@comment-68.229.94.10-20160824224139

Well Luffy has to start mastering G4 like he did G2/G3, and he's only going to do that by practicing, so I disagree. Luffy will have to use G4 against Cracker, a guy who is portrayed as stronger than Mingo, if he wants to win.