Really? I actually like how they made him lost from mental fatigue rather than being outclassed in skill. Which makes sense since Sunraku talented as he is still has a flaw of his own. Keep in mind that he is not a full time professional gamer. This is also the first time he played a human player on her level. Even a slight decline in his performance ended up being his downfall. This way Silvia is not just another fodder that MC can beat and we get to see K play her.