There's been an update recently, mentioned just above your post:
In the previous version when the game was analyzed, ADS and Ironsights shared the 1x setting. Since it's separated now, it affects all calculations.
Do note that the old calculations were correct for everything except ironsights, and now that Aim Down Sight Horizontal Sensitivity is linked to ironsights it changes all the other values accordingly.
In short; all values will be updated compared to your old calculation, but in effect everything will be the same as before since they account for the change in the ADS sensitivity which only affects ironsights directly. Previously ADS sensitivity had no direct affect on any aim, so it was treated like hipfire, and all the scopes were based on this. But now since ironsight is affected by it, it changes the source for all other scopes.