User blog comment:Mrgod11234/The strongest man in the world and the most dangerous man in the world/@comment-4094276-20110726135133

There is a difference. Strongest man refers to combat strength and so on, if Whitebeard chose to, he could have destroyed the world, but he was not the kind of man who would do something like that. I think the next strongest man will be BB because of the events at Marineford.

Most dangerous man refers to threat to the world gov't. Dragon is directly attempting to destroy the world gov't; therefor, he is the most dangerous man. Not to say that Dragon is not Strong, he has to be otherwise the WG would have killed him a long time ago (he also has subordinates such as Kuma and Iva, who are strong).

I guess it is similar to the way bounties work, they are not completely based on strength, but also threat. Luffy got high bounties because he defeated Shichibukai (upsetting the ballance of power, also a show of strength) and declaring war on the WG. I believe that Dragon cannot beat Whitebeard in a 1 on 1 fight (it would be a good fight though), but he has a higher bounty.