Ooohohoho so she found her new self, a superior play style but it was too late and she was too tired... Her body couldn't keep up with her new playstyle I guess... But really, it is a little bullshit that Nagisa is even able to walk after the effect of the adrenaline runs off, I mean, she was like minutes away from breaking her fucking knee, she was pretty much as tired or even more tired than Ayano.
So I guess, if you thiiiiiiiink about it, the endurance of Nagisa was the winning factor, not that bullshit the old man said, is because Ayano stopped playing for so long and Nagisa keep on playing.
What I mean to say is, in a second match, you know who's going to win right?