Dallas is only favored because more money is bet on them. I like Atlanta in this game.
Actually, Dallas -4 does not mean more money has been bet on Dallas. I think the line came up at -4.5 or -5, and was bet down to -4. Which means since the line has come out Atlanta has received more money thus bringing the line down. Now the New England and Tampa Bay game was a different story the line cam out at around New England -12 and was bet upto -15. or -16 depending on where you got it, this means even with giving 12 points all the money was coming in on the Pats.
Hope this helps, and I was not trying to bust balls, but just wanted prople to know that Vegas sets the line according to how they think the betting public is going to wager, and not on what they think the actual out come will be.
Also the betting public is wrong somewhere in the neighborhood of 65% to 70% of the time.