slowmo on 30 April 2010
Wii - Most likely will
360 - Depends on Natal but still a small chance of holding on without Natal succeeding
PS3 - Not a chance as it will not have enough exclusives to make up the gap, the 360 benefits from the extra year of exclusives it had pre launch of the PS3, from here on out 99% of titles will be multiplatform with similar attachment rates to similar userbase numbers. It is feasible the PS3 will catch up a little but not enough to usurp the others numbers.
All above is just my opinion
