PS3 can still finish in first place.

[forest-spirit]

Let's say PS3 needs to sell 115-120m in it's entire lifetime to be a sure winner. That's almost triple the amount of units sold so far! Do you really think that almost 2/3 will be sold during the remaining years?

If it were the PS2 then it could happen but it isn't. The PS2 had a huge library of exclusives and to be able to play a huge chunk of last gen's gems you had to have a PS2. The situation isn't the same this gen and that will keep the PS3 from getting those sales. In fact, that is what hinders all of the home consoles from reaching a dominant position.