I disagree, but it depends on what you're looking for I guess. If it's lyrical pyrotechnics then they ain't it. The production is so strong I can live without this, I reckon. I think of their rapping as more like a texture alongside the music in a lot of their tracks anyway.
Re: the Gucci tape. Two things 1) Mike Will goes from strength to strength, his beats are inredible - or maybe that should be his absence of beats? He has a real way of holding back the drums dropping which creates amazing tension - North Pole is a perfect example. 2) I've never noticed it quite so much before, but Gucci flips his speed, delivery, accent and vocal stylings differently on every track, if not verse. He's absolutely on fire.