912 VS 914 wiring diagram

So looking at the 914 vs 912 wiring diagram I noticed some difference that I didn’t think should change and I’m wondering if anyone has insight. I attached pictures of the drawings. Fuel pumps aside, why the difference between the two? They run the same two alternators. Why does the 914 have an 80A CB? I was planning on a setup closer to the 912 one I just want to make sure I’m not missing something.