I think I may have figured a way of figuring out what their morale would be against me. Just divide their total number of points with my total number of points. Then take that number and divide your total number of points and find a village with similar number of points and check morale. I'm assuming it works by calculating the amount of times more points they have as compared to yours.
For example, they have 10k points, you have 1k points. They are 10 times bigger than you are. You find a 100 point village and see what your morale is. That should be the same as their morale to you.