It's more tmacs decisions, he chooses ridiculous options at times and that is where they cost us.
Dunstall mentioned it on the coverage that he chose the hardest of 3-4 options and the option he chose was the on most likely to be turned over and make it easiest to score against us.
That is his most frustrating attribute. If he limited/got that out of his game he would be AA every year.
Yes, all players make mistakes, Tmac causes more frustration as it is the same mistakes in the worst possible area of the ground. And he will make the same mistakes multiple times in the same game.
Other than that, he is a bloody good defender.