Hopefully Dong doesn't rely on it. He fought like a crazy person last fight. It worked out then, but I don't see lightning striking twice. Especially against better competition.
After the amount of strikes he took from Matt Brown I would have to agree. I didn't think it was possible for anybody to take that kind of punishment from Brown, at least we know that shot from Dong didn't ruin Silva's chin.
Brown was focused on not getting hit to the body for the most part and favors volume over power in one shot, especially last night. Dong threw all his weight into a full power punch. I'm sure Kim is one of the harder hitters with that judo strength and athleticism. Probably not "the" hardest hitter though.
I think you're exactly right. I believe Ellenberger has the most power at 170 if it came down to it. With Hendricks, Lawler, Lombard, Woodley, etc. welterweight has some really hard punchers these days.