Nobody said they are the next anything, and I clearly stated they are nowhere near as good as Kane/Rakim and Nas/Jay in the first sentence.
What is up with all the fail comprehension in this thread?
I'm simply saying that they are the two most prominent and respected lyricists of an era, as Rakim/Kane (though you could easily replace Kane with G Rap) and Nas/Jay were.
They will both be lasting artists and its apparent. Cole is about sell over 300k with no buzz and no single. Kendrick's next album will be a huge event and he has the talent to keep delivering. Plus, Rakim and Kane (and G Rap) were considered the best of the golden era of 87-89 plus a few years beyond. It wasn't that long.