I don't think so. 360 sales will likely ramp up a lot. MS loves to make big pushes at the end of the year. If SONY could counter with some decent marketing (LMFAO... *sniff*, *wipes tear*... sorry) or even a revision+price cut and counter MS' sales gain, then perhaps sometime next year with the systems apparently consistent healthy sales they can over take the 360.
4 ≈ One