In TG, there are no clear judgements. The moral ambugity is what makes the story so enticing. I agree that Kaneki can kill everyone there individually, although if Wushuu and Ui teams up - who knows. The power of the CCG comes from their formations and the fact they fight in these formations using co-ordination that one ghoul cannot. They also have their qunques, some being stronger and more unique than others - these weapons also contrast Kagune in that their technological not biological (like Kagunes).
All in all, this has been a surprisingly important 'raid'.