Very normal for commentators to give their opinion/evaluation. Dont try to silence them when their predictions go against the player youre rooting for. Maybe be happy that he was wrong on this occasion....?
Nguyen plan A worked really well in the first game. No one was to know he hit the wall in the second and when that happened there was nothing to stop Lin Dan. When you commentate you can put in all the if's and but's. However in most cases you don't have the time to elaborate. For the seasoned viewer I am sure most will understand, "if everything stays the same, chances are that this will happen".
I love how the experts come out of the woodworks every time a commentator and/or expert makes a wrong prediction or evaluation. Let's see you do a better job....? Oh wait, predicting your personal favorites will win every time is way worse, especially when it comes out of some nationalistic motivation? What a shocker. Freaking hell let them have their opinion. And if they wrongly predict your itty bitty favorite will lose, be twice as happy when they win and the people who know much more about badminton than you were wrong for once.
Ohori's skill is better now and H Binjiao is faster, much faster! This match is so good, this is the first time I see Ohori can play very long rallies and win the point at the end.