Just look how his hands were shaking in that Krü game. Yeah, idiots will come up with iceland, but they were not even tested at that event.
That does n´t mean he wont change, but we can not say that he is the best player in the world when shit like that continues.
For sentinels as a team: I think it is pretty obvious that the team isnt working anymore, roster changes have to happen. It isn´t anybodys fault, just sometimes things just do not work out.