So, I listened to the first 6 tracks (~30 mins of music) on Spotify (ie pretty decent SQ), and then I just couldn't go on with the following 6 tracks.
The lyrics on "Good Kid, MAAD City" are undoubtedly 'better' than on "MBDTF" and, as you say, Idsynchrono, they "come from a real place". The problem, for me, is the music. To me, music always comes first, lyrics always second. When you have someone like Peter Gabriel, who, in my view, writes not only excellent music, but well crafted lyrics, then even better (note PG is not my favourite musician, but I like quite a bit of his music).
A lot of the music I listen to is instrumental, be that classical, rock, pop, world, jazz, etc. Although "MBDTF" may not be lyrically on the level of "Good Kid, MAAD City", to these ears, the former is MUCH more interesting and rich musically, while the lyrics aren't always 'that bad'. This, unfortunately, is what I find with most hip hop / rap or pop music I've come across. Mind you, I find a lot jazz, classical & rock, etc. dead boring, cliched and empty, too.