Gamification frameworks, like many other industries, are all over the place. Everyone has one and probably argue theirs is the best. Hell, I’ve got loads dotted around the site!
But, which one is actually the best?
Well, none of them. They mostly have equal merit based on the context within which you wish to use them. Some, whether they admit it or not, are more suited to analyzing existing systems to gain insights, some are more suited to the practical design of solutions. Some are great at helping to define specific elements you may which to use, some, how to motivate specific groups of users and yet others how to actually run the whole project.