Just watched a video on this at the gym while working out. They explained how they do their times and compared to WDW times. First, and I believe this, Disney will post times longer than they think they will be. Why? So people are not mad they waiting in line 20 minutes longer than the stated time. Then when they are done 20 minutes ahead of time, this leaves a better feeling in their attitude toward wait times. I agree with this ... under promise and then people are happy. Touring Plans actually sends people to the park, looks at the stated wait time on the app, puts someone in line, then compares them. The video I watched showed the specifics from that day. They did this on several of the big rides. In most cases, not all, they were much more accurate than the disney app times. Of course there are times when this may not be the case. And, keep in mind these are unprecedented times. But, I have used them to gather info and watch trend prior to a trip. The philosophy behind it is sound. The information I have read demonstrates they invest in trying to get it right. We have been happy, for the most part.