What team has the best overall record in the NFL?

the 1972 Miami dolphins, they were 17-0. they beat the Washington redskins 14-7 in the super bowl. the 2nd best was the 2007 pats, the were 18-1. they had an 18-0 start, but lost 2 the giants 17-14 in super bowl XLII (42). the pats had 10 seconds 2 go 19-0, 4th &20, ball on the NE 20. tom brady threw downfield on the left sideline 2 randy moss, who dropped the ball on the NYG 11. incomplete pass. the clock ran from 4 sec to 1 sec. Eli manning took a knee and puled off the upset.