This would require the following sets of numbers.

Wii - 110M
360 - 82.5M
PS3 - 82.5M

Wii - 115M
360 - 90M
PS3 - 90M

Wii - 120M
360 - 95M
PS3 - 95M

I think one of them will be able to get to 30% but the other won't quite get there.

Haven't decided which one will be the one to get to that 30%

I wonder who voted for 'See results'?

Wii will probably end somewhere between 110 and 115. PS3 probably around 95 to 105 so it's almost guaranteed to reach 30%. For 360 it comes down to where PS3 ends. Max I can see for it is about 95, depending heavily on if MS can re-establish themselves in continental EU and South America since that's almost the only place they have with room left for growth with saturation closing in in North America.

Who knows. That's a hard one. I think it'll be close.