User blog comment:PlantyThePottedPlant/Random Topic Blogging III: Blog Harder/@comment-3251190-20130723150642/@comment-3395649-20130727161156

Sequels are good if they continue the story instead of rehashing it. Kung Fu Panda 2 is an example of the former. Cars 2 is an example of the latter and explosions.

From the reviews of it, Depicable Me 2 is an example of the former.