Interesting NFL stats after nearly 5 weeks

Bottom 6 teams in terms of points scored – points against compared to their win-loss record their record. I expected the first 3, but not the next 3.
Buffalo: -74 ------------ 0-5
Carolina: -58 -----------0-5
San Francisco: -54 --- 0-5
Arizona: -50 ----------- 3-2
Jacksonville: -30------ 3-2
Miami: -26------------- 2-2

Here are some other interesting ones:
Detroit: +14 ---- 1-4
Chicago: +18 --- 4-1

All of the NFC North teams have outscored their opponents. Combined record of the teams in the division is 9-9.

None of the NFC West teams have outscored their opponents. Combined record of the teams in the division is 8-12.

The whole AFC South division is 3-2 and they have 2 of the 3 worst defenses in terms of points against.

This was written before the MNF game of week 5.