Same direction of force does not imply same moment of force.
Think in terms of a see-saw. Two people sitting at the two ends (opposite to each other) of the plank, the weight of the two people are pointing downward. But the moment of weight about the pivot is different.
Again think in terms of a couple. If you don't know what is couple look at the link below.
http://physicsnet.co.uk/a-level-physics-as-a2/mechanics/moments/ The two forces that are acting on in a couple system, are in opposite but they gives rise to same moment of force.
Like what Joinedup has said, please revise back moment of force.