I liked both BoB and Lupe's responses. BoB's was tough, and Lupe's did scratch that super lyrical itch.
As much as I like seeing people responding to Kendrick, I think people just go make better music. That's really what is driving all this. Kendrick just reminded us all what's really important in hip hop. Competition and professional pride without any "beef."
Edit: Although, it would be interesting to hear the MCs Kendrick name-dropped say something.