Ghetsis has that caneSpoiler Alert!to control Kyurem. It also disables use of Pokeballs, which he blatantly explains t' the protagonist prior to their battle.
Ya must have poor short term memory, 'cause Ghetsis fights ya with his team of 6 just like in BW1 after you defeat Kyurem. His original team is slightly better though... Higher leveled for some odd reason as well.
AC:III multiplayer is broken, as usual... blehhhhhhhhh ubisoft