If I understand it correctly, the number of rep points that someone receives from you is based on your reputation power. So the less power, the fewer points they receive, and vice versa.
When EP modified everything and our points changed, mine ended up being one point for every person who added to my reputation (16 people, 16 points). Since then, one person has added to my rep and that one person gave me 5 points. I assume that their reputation power at the moment is 5. I hope I'm getting this all correctly. 🙂