I think what is abundantly clear after this week is that 'quality' has had very little to do it.
As has been posted many times this season, he simply goes missing and refuses to get involved.
I've posted a couple of times in match day threads that when we are on the front foot as a team, he looks great. The moment it gets tough and we have to dig in or fight, he simply hides.
Of all the things Pearson detests, this attribute has to be right up there.