It doesn't matter, there will be no comeback
Sony were in a clear #1 position with a massive majority marketshare plus regular profits in their gaming division. They've lost all the PS2 profits and well on their way to eating up the PS1 profits. If they do have another price cut this year they won't be making profit for a while longer.
The most realistic best case for Sony is they overtake the 360 in total global sales at some stage towards the end of the generation and start turning a profit in 2010. However it's irrelevant really as its all about perspective. Sony were dominant, they are now in a distant last place, this generation is over, they can only try to rebuild their reputation with their next product.
Never argue with idiots
They bring you down to their level and then beat you with experience