He is a smarter defender than Kos too in the sense that he doesn't concede penalties the way Kos does.
I'd still much, much rather we signed Mangala off Porto. He is built like a tank, fast, excellent on the ball, top class defensively, organizes his defense, and is beastly in the air. Now there is a superstar CB in the making! He is 23 now, and this summer may be the last chance for us to sign him.