Nas is definitely not competing for the top spot especially since Illmatic is one of the most legendary albums in hip hop, and he probably won't ever make anything as genius as that album was and no one ever will. Heck, Life is Good is a better all around album than GKMC. To me, Kendrick isn't worthy of acknowledgement via a diss track or even a subliminal. Kid is one album deep, he's not even king of the west, and personally I think this generation don't care about content. He just raps real fast and says some shyt that rhyme and suddenly he's considered great. His content is wack. I can't fukk with him, and he needs to respect his elders.
Kendrick is a little hyped up kid, and he never said shyt about Nas or Jay, and if anything if they respond they'd lose respect.