Masataka was pretty much fine after he got himself caught on his zipper since he started beating the crap out of Kagurazaga once he got serious.
Fine, he fought 80 guys, but if Bob was able to take out some of them with less than a week of training, then Masataka-who has at least two years of training and experience fighting against other martial artists in the election tournament, should have been able to take out the basic of goons with as far as we seen, can't or didn't use ki attacks. He didn't look so helpless against Kagurazaka when he recovered. True, Bob might've needed his help walking, but look at his style of fighting and the area that he was fighting in and his conditions: he had to hide Chiaki in a locker cause he couldn't get out in time and his style, before he started learning other attacks, is Capoiera. To use it to attack and not for performance, you need space to move.
If Masataka just saw a panty shot, then why didn't it stop him when he saw Madoka in her undergarments or Nokimi when she was naked? What you're saying is that all you have to do to beat Masataka is to flash some girl's private parts and throw a kunai to the head: quick and simple. At this point, it doesn't matter how honorable you may be, if you're still not aware of your surroundings, how can you be a True Warrior?
We're not saying that, at least I'm not saying that it doesn't apply to anyone else. When the topic is "Masataka", then he's the focus. What I'm trying to say is that he has strengths and he has weaknesses, simple as that. Not to say that anyone else isn't in the same ballpark as him.