To win over someone else's statue, all you need to do is wait for you XP skill and then go in. You will win almost every time. Especially against the A.I.s that represent the players. Because not everyone is on all the time to be able to defend against someone trying to take their celebrity rank.
Also, if you CC the A.I. into the "wall" or outer parameter, just stay away and hit the thunder on them or XP skill.