PFF Team Rankings Thru Week 13

I'm still bored. More PFF rankings, this time team rankings, our rank and the top ranked team in each category. These are cumulative rankings, not just for one week:
Passing: 5th. Tom Ranked: Cincinnati
Pass Blocking: 23rd. Tom Ranked: Green Bay
Receiving: 8th. Top Ranked: Detroit
Running: 7th. Top Ranked: Baltimore
Run Blocking: 26th. Top Ranked: San Francisco
Overall Offense: 12th. Top Ranked: Baltimore
Run Defense: 23rd. Top Ranked: Minnesota
Tackling: 14th. Top Ranked: New England
Pass Rush: 23rd. Top Ranked: Pittsburgh
Pass Coverage: 11th. Top Ranked: Philadelphia
Overall Defense: 18th. Top Ranked: Philadelphia
Special Teams: 18th. Top Ranked: New England
Overall Team: #13 Top Ranked: Detroit
All I can say is that we must have been ranked #1 on special teams in Week 12 to rank as high as #18 in Week 13.
Another interesting tidbit that I noticed. The 10-2 Buffalo Bills, having been the only team to have beaten the Chiefs and who are in everybody's top 5 in power rankings, have an overall team ranking of #14 out of 32 teams. Perhaps the total is greater than the sum of all the parts? I'm sure there's other oddities, but that one really stuck out.
Passing: 5th. Tom Ranked: Cincinnati
Pass Blocking: 23rd. Tom Ranked: Green Bay
Receiving: 8th. Top Ranked: Detroit
Running: 7th. Top Ranked: Baltimore
Run Blocking: 26th. Top Ranked: San Francisco
Overall Offense: 12th. Top Ranked: Baltimore
Run Defense: 23rd. Top Ranked: Minnesota
Tackling: 14th. Top Ranked: New England
Pass Rush: 23rd. Top Ranked: Pittsburgh
Pass Coverage: 11th. Top Ranked: Philadelphia
Overall Defense: 18th. Top Ranked: Philadelphia
Special Teams: 18th. Top Ranked: New England
Overall Team: #13 Top Ranked: Detroit
All I can say is that we must have been ranked #1 on special teams in Week 12 to rank as high as #18 in Week 13.
Another interesting tidbit that I noticed. The 10-2 Buffalo Bills, having been the only team to have beaten the Chiefs and who are in everybody's top 5 in power rankings, have an overall team ranking of #14 out of 32 teams. Perhaps the total is greater than the sum of all the parts? I'm sure there's other oddities, but that one really stuck out.