The article left out MONEYLINES(ML), which are good because like there are only 2 possible out outcomes - no ties(pushes), which in reality is your best bet for winning because 2 outcomes means 50% chance of winning or losing.
So, take MLs which are 50% chance to win/lose then apply the odds(lines) that the MLs are offering - to try to figure out if the team you think is going to win the game is worth the money you risking for the payout.
This applies to baseball too