When have I underestimated gaethje? I picked gaethje against ferguson, chandler, Fiziev, and poirier. I didn't pick him against charles. I've been good at picking gaethje fights.
What I see is gaethje's biggest weakness being pressure fighters that push a pace he can't maintain and guys who go to the body -- max is one of the best at both of those aspects. I'm not even a big max fan, but I think this is a decent stylistic match up for him if he doesn't get knocked out in the first 7 minutes, and judging from max's chin, I'm pretty sure he'll be able to survive the early power of gaethje.
Everyone who has beat gaethje pushed a pace that gaethje couldn't keep, which made gaethje sloppy and make mistakes and slow down. That is Max's entire game....