There are 12 spots for ECW and so far 5 are confirmed, so that leaves 7 spots left so Matt Hardy WILL count as one so that means only 6 ECW wrestlers can be in the game.
The are 24 spots for SmackDown and so far 9 are confirmed, so with Jeff Hardy and Mr. Kennedy that leaves 13 more spots lefted and Im guessing Edge WILL be one of thoses.
The are 27 spots for Raw and so far 20 are confirmed so that leaves only 7 spots lefted but including HBK that only leaves 6.