But we know that demonstrably isn't true, at least in regards to mental strength. You don't play the sort of knock he did in the UAE without having reserves of mental strength.
The issue I see is seemingly picking and choosing when to really apply himself. Which is more a discipline problem.
I think the two are intertwined. For him to pick and choose when to apply himself shows a lack of real fight, perseverance and therefore true mental strength for mine. And in inability to consistently be able to concentrate for long periods, not that he was out in the middle for too long on this occasion. So disappointing.