At the rate from this quarter alone, yes. Holiday sales significantly skew this, and my previous models had factored those in.
If this holiday sees the 360 outsell the PS3 worldwide, I will alter my model -- but as it stands, the PS3 has been consistently outselling the 360 by small margins every quarter. My model is simply based on the last 15 months of history.
I'm really not sure if my predictions are very complimentary to the PS3 either, however: I know MS fans don't like my model, but I'm actually predicting the PS3 will catch the 360 5-6 years in to the generation. That will certainly be the generation's twilight years.