Nice to see that when Suiryu's pushed into a real hard battle he steps up to it. Although I feel like when it's over he'll instantly revert to his easy street-loving ways. Definitely don't see him joining the hero association or anything like that.
Obviously of all the guys present it'll take Saitama to take down Gouketsu, but I don't think that will actually happen. After all, if he oneshots a Dragon in front of two A-class heroes he'll get some recognition and we can't have that, now can we? Heh. Could be Tatsumaki, or Darkshine or who knows who else. Bang? Or maybe it'll just come time to end the assault and Gouketsu will just walk off and be saved for later. He's only used brute force, but he's also supposed to be a master martial artist, that skill's got to be unleashed on someone and these 3 are in no shape to take it.