Bruce Kluckhohn/Associated Press
With the Patriots (9-1) and the 49ers (9-1) looking slightly vulnerable, and the Ravens (8-2) getting better each week, it appears the title for “N.F.L.’s best team” might be a lot more open than it seemed two weeks ago. Week 11 had an ugly start on Thursday night, and had the added drama of Colin Kaepernick’s workout on Saturday, but on Sunday it was all about football. Baltimore rolled to a huge win and San Francisco and New England overcame early deficits to win as well. But the most exciting result came in Minnesota, where the Vikings engineered one of the least likely comebacks in recent N.