What's the Best Division in the NFL?

Important Note #1: I chose the sample size of since the start of the 2004 season, before I looked at the data. This was to prevent any skewing of the data. For example, sometimes people use stats like he's made 7 of his last 9 shots. Well what about his 10th shot? If you're starting at counting his last 9 shots, he probably missed the 10th, making him 7 of 10. So they presented the stat to make a point, but they skewed the data. It's better to reference those stats with time, if you say he's 7 of 9 in the second half, at least you're not leaving out any critical data.

Important Note #2: I chose the sample size of since the start of the 2004 season, because of NFL schedule irregularities, it's important to include multiple years, but I thought that data from 3 years ago wasn't relevant to the current teams and divisions. Although, my hypothesis is that even adding a couple more years to this data, wouldn't change the results that much.

Best Division in the NFL as of Week 8 in 2006
1. AFC West (16-12)
2. NFC South (16-13)
3t. AFC South and NFC North (15-13)
5. NFC East (15-14)
6. AFC North (13-15)
7. AFC East (13-16)
8. NFC West (11-18)

Best Division in the NFL in 2005
1t. AFC West and NFC East (36-28)
3. AFC North (34-30)
4. NFC South (33-31)
5. AFC South (32-32)
6. NFC North (29-35)
7t. AFC East and NFC West (28-36)

Best Division in the NFL in 2004
1. AFC East (37-27)
2. AFC North (36-28)
3. AFC West (34-30)
4. AFC South (33-31)
5t. NFC East and NFC South (31-33)
7. NFC North (29-35)
8. NFC West (25-39)


So what really is the best division in football?

Best Division in the NFL (2004 - current)
1. AFC West (86-70)
2. AFC North (83-73)
3. NFC East (82-75)
4. AFC South (80-76)
5. NFC South (80-77)
6. AFC East (78-79)
7. NFC North (73-83)
8. NFC West (64-93)

Also, since 2004:
AFC (327-298) 52.3% wins
NFC (299-328) 47.7% wins