While this really sucks for Sony and PS3 owners for this holiday season, I think the rash of PS3 game delays will mostly be a phenominom for this year. As engines are built and developers learn how to use the cell processor, they'll become much more able to meet target dates.
Microsoft however, was very smart to help developers out as much as possible and make it as easy as possible to develop for the 360, resulting in far fewer delays comparitively.







