This is a little oftopic but interesting.
If you think, with the resources you have now, that the simulation is accurated but 1 year later better information let you know that some things should be adapted, changed, revamped, how this could be a guesstimation in the first place?
All developers, included ED are full of examples of several weapons, systems, operations that at the release were "accurated" as far with the info available, but with time passing, they changed some things because the info available after was better, more complete or exact.
They code and develop things the best they can with the info they have, and when they have better info they adapt the modules to that.
Nothing wrong with that.