Noah was a little disappointed because in that battle no window had appeared, which proved a thesis he was working on.
Basically, he needed to face truly strong enemies to achieve this. Fighting weak opponents like the man from the last fight he participated in, the man who gave up, was not going to make a window appear floating in front of him as it appeared when he defeated Bobby.
This was not the first time that Noah had had a window floating in front of him after a battle. Noah had already received a window like this in the fight against the first man, and the result was extremely satisfactory, especially against the man from the first battle.
Against the first man, the window read: [Congratulations! You received 1 mana point. Your mana represents the maximum amount of energy you have to use your Blessing. This was a hidden statistic, before. After the first time receiving a new point, the user can now see how many points he has.]