Since it's really impossible to watch every single person's time, so their unofficial in that you can only go by the person's word. A lot most likely don't spend a lot of time trying laps in lan servers, so they don't even really realize that their time was most likely affected by micro lag that they didn't notice. And we can't just go taking out times that are faster than those that are possible either, since there are times when it's affected by lag but doesn't take it to the realm of impossible. It merely places it in the top area for those that are possible. Basically, it's impossible to know for each and every time whether it was affected by lag or not and keep the nature of this thread the same.