Recently Lipton made a kaguya for fun and wanted to test it out. Well it was ridiculous. He's fought several people and usually doesn't have a problem bulldozing over them, despite being a relatively new player. I couldn't even get close to beating him; his defense and regen were off the charts and his damage was very, very good. A clematis halved me. Moving through ferns for a couple tiles hurt badly.
I'm just gonna come out and say it: Kaguya has made itself into the easiest, most BS clan NNG has ever seen. And yes, I have played it for myself. You can practically go to sleep and still beat most people.
The damage should be lower, the defense should be lower. There is no reason a level 104 Kaguya should be able to take 5+ dragon flames and phoenix flowers, plus 2-3 chidoris, from a level 120 Uchiha (no EMS), and still come out of the fight without ever going under 50% HP.