He does have room for improvement at home. His record at home since 2010. I could make that look a bit worse if I went back a year further to the Pakistan series.
http://stats.espncricinfo.com/ci/engine ... pe=battingWhich leans a hell of a lot on his 294 against (a demoralised) India but that is really searching for weaknesses.
His impressiveness was emphasised last winter, when he lead the way (with Trott, which is why I feel sanguine about
his slump) in countering the Pakistani spinners, when the team went into a collective shock, just at the utterly alien nature of the challenge. He didn't freeze, or panic, or give up. And he lead them away from understandable doubt in Ahmedabad as well.
I'm not quite feeling anymore that his ultimate trump card is his concentration which allows him to make the absolute maximum of propitious opportunity. So not just mental characteristics. He has an all round game now, to all kinds of bowling and plays not only all the shots, but plays them at the right time. His improvement against spin is remarkable.