Its going to be great! But there is one caviat (there is always one with CC2)
The 4 player mode, isn't 4 human players fighting each other directly, its 4 people, each fighting 3 AI in an arena. Then if you got the most orbs compared to the AI, you win that round. Once everyone is done fighting, then the winners (humans and maybe computers) scores are compared to each other. then whoever got the highest orb count out of the four people participating will win the tournament as I understand it.
It sais in almost every article that it is 1 player vs 3 AI.......