Vegas looks at all sorts of stuff like how does a team do on the road compared to home. I showed the numbers in another thread, but just look at the results for yourself. Sure, KC is 9-0 and traveling to 8-1... but, that doesn't automatically mean the PS is going to be 3.
Hell, they could have started with 5.5 and many would complain.
Again, I think few doubt the awesomeness of KC's defense... it's the offense that few believe in at this point and recent road games give validity to the concerns.
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