How come airport runway dimensions aren’t accurate to airnav real life
The difference is only 1-5 feet, there’s no problem here.
Because of how airports are edited, the runway lengths published in-game is measured in accordance to the runway that is in-game. This means that the runway length can change from time to time, depending on whether the runway is edited or not.
Airport editors will, to the best of their ability, try to get the measurements as precise as possible, though minor deviations may occur from time to time.