Personally I think Kell Brook is massively over-rated, especially by Sky Sports. I remember i'd watched a couple of Kell's fights without paying much attention really and i wasn't blown away, but the first fight I really watched of his was the Hatton fight. In the build up to the fight Sky made Brook out to be something like/ the next Prince Naseem with dazzling speed and power, so i thought maybe i'd been missing something with Kell. So i watched the Hatton fight and well yes Brook dominated and won easily, but Hatton (as much as i like him) is a limited fighter and to be honest although Brook looked good he didn't look anywhere near the fighter he was billed to be. In the Jones fight again I wasn't as blown away by the speed of Brook as the Sky commentators were, but i did admire how Brook hung in there to get the win.
My honest opinion on Brook is that he is a fighter with above average, but not unbelievable speed and above average but again not unbelievable power. I do think he'll win a world title somewhere along the line, maybe against Alexander, but i don't think he'll ever really be a top rated pound 4 pound boxer.