The Line Predictor is a tool that helps you decide on when you should make a particular play. It is not something your picks should be purely based off, though.
For example, you may be on the fence about taking the Patriots at their current line of -7.5, but you would take them at -7. If you see a Line Predictor on the Patriots that says they'll likely move to -7, you should wait to bet on them until the line moves. If you don't like the Patriots regardless of the line, you wouldn't bet on them just because you saw a Line Predictor on the game.