NME gave it 5/5 and you're complaining about p4k? In my opinion it's not that bad, has a couple of weak tracks (espec. track 5,6,7) but the rest is decent. Also the first grime record I've ever listened to.
as if mercury has never picked a stinker before... speech debelle, ms dynamite, etc. you even seem to think that it's based on being the "best album" rather than just an industry signal boost selecting from a criteria of the best lesser known artists with the potential for having more mainstream appeal. keep listening to what mercury tells you is good though. mongo.