Because I think people tend to remember a batsman being wrongly given out more than when he's incorrectly given n/o Hair's got this reputation as "one of the best decision makers"
He isn't. He's constantly giving batsman not out who are plum. I think back to Kaneria being robbed of the hattrick against England out there. Very similar looking to todays shocker with Ambrose. And KP's yesterday too, both middle stump half way uppers, no excuse.
I'll be interested to see how consistent he is in this NZ second innings. He seems to have quite like ENgland all in all.