A weekly examination of the 49ers' ESPN.com Power Ranking:Preseason: 3 | Last Week: 6 | ESPN.com Power Ranking since 2002It's funny how things work.The 49ers blew out opponents in back-to-back weeks by a combined score of 73-27, yet they stayed at No. 6 in the ESPN.com Power Rankings. This week, the 49ers moved into the top five after a bye week.The reason is the logjam above the 49ers loosened a bit with New Orleans losing. The Saints are now No.