Interesting how all these numbers are thrown out there.
Direct or Indirect Belays play a factor as well.
Next deal, apply it... Haul and jug on em or better yet, take a screamer or two on it (with a Direct Belay) and see if them numbers work in reality.
Remember this, numbers mean nothing if the coordelette is not tied correctly, Power Point applied incorrectly or if your pro is not placed accordingly and correctly. The entire system needs to be 100% correct or failure will occur. And you do not want to find out what happens when the system fails.