The PS3 / 360 gap is now less than 2 million. Is it inevitable PS3 passes 360 in 2013?

[BenVTrigger]

This console cycle is dying at a rapid rate.  However with the World wide gap now less than 2 million between the PS3 and 360 is it only a matter of time that the PS3 passes the 360 in 2013?

Or will the 360 somehow successfully hold the PS3 off until it can release it's next generation console?  While most will probably think the PS3 will rapidly surpass 360 sales I can't help but wonder if it will take longer than most people think.  With console sales slowing unbelievably 2013 should post some record bad sales numbers for the HD twins.

So simply put, will the PS3 pass the 360 this year or canMicrosoft hold them off till next gen starts?