I had Tennessee rated at just 0.6 points better than an average team heading into this season so it's not such a huge surprise that the Titans are 0-3 after going 13-3 last season.
The Titans have actually played at a pretty good level, as they have out-gained the Jets, Texans and Steelers 5.6 yards per play to 5.1 yppl. Jacksonville, meanwhile, has been out-gained 5.6 yppl to 6.3 yppl by teams that would out-gain an average team by 0.7 yppl, so the Jaguars haven't played that bad either.
My ratings favor Tennessee by just 1 point and using this year's games only would result in a math prediction of Tennessee by 2 points.
With that being the case, I'll lean with the dog.