I think the Point is that 10C & Poosy are 100% the same team and Amaterasu and Envy are 100% the same team and yet they count as another team on the list
They count as another team as they re-named and were under different leadership. In Poosy vs 10c's case Golden, Hypno, myself, Hertz, Shadey and Alf are all players that were not in either 10c or Poosy that's 6 players in total in a 9 man roster.
Envy/Ama you can argue are closer but they also ended up changing players quite a bit with players like Fietta, Drake, Extaz, Zenon and Marquez all changing. As well as leadership for both these examples.