Off the record, I can probably explain a few things about how easyWDW.com operates.
First of all, the overall crowd level is based on Disney's internal projections. As far as I know, it's the only website that could tell you both how many people Disney is expecting in each of its major theme parks and water parks and then how many people actually pass through the turnstiles on a day to day basis. This information is not publicly accessible, but it isn't impossible to access either. Since I want to continue running the website, I rarely mention this and you wouldn't see any official discussion on the site.
So if daily attendance is expected to be:
Magic Kingdom: 45,419
Epcot: 30,814
Hollywood Studios: 23,912
Animal Kingdom: 19,820
That might come out to be an overall crowd level of "five." The numbers are simply added up and compared to the 180 days before it and the 180 days ahead of it and then designated a single digit.
As far as wait times are concerned, the website does not rely on user data whatsoever. Wait times and FASTPASS return times are also available online 24/7. The website "scrapes" this information using a script that I honestly don't understand. But what it does is output a pretty handy PDF file at the end of each day with wait times and FASTPASS return times in 10 and 60 minute intervals every day of the week. Obviously, this provides a very nice look into wait times at every attraction, all day, every day.
Before I had access to that, I simply spoofed the GPS on my phone to tell Mobile Magic that I was in the various theme parks and wrote down the wait times and FASTPASS return times manually. In other words, I basically made the phone tell Mobile Magic that its coordinates were inside Animal Kingdom, even though it was sitting on my desk (in Orlando).
Using this information, I make the determination about which theme parks are recommended and explain crowd flow. I try to point out the best days of the week to see the Electrical Parade and Fantasmic, knowing people want to see those shows. I also point out the least crowded days of the week at each theme park, ranking them from "Most Recommended" to "Least Recommended." Unfortunately, I "can't" recommend Electrical Parade days some weeks because the Parks are so much more crowded those days, but the "daily analysis" allows me to explain how to have a successful day despite the crowds.
I think people find this easier to understand because I synthesize the information for them. I take into account the entertainment, the operating hours, the day of the week, the crowd level and make a determination about where most people are going to want to be that day. Because Magic Kingdom is the most popular, I usually look for the best days of the week there first. In other words, if the Studios and Magic Kingdom both have low attendance compared to other days that week, I give the nod to Magic Kingdom. Then in the daily analysis, I can explain that the Studios is your best choice if you have plans for Magic Kingdom, but also that Magic Kingdom is harder to schedule. Sometimes it's the opposite. For example, during Star Wars Weekends I give the nod to the Studios on weekdays because it's so hard to fit it in with Friday, Saturday, and Sunday being so busy. The same is true at Epcot for the Food and Wine Festival and various other events.
Instead of, "Who has the best crowd calendar?" I think a better question would be, "Which site prepares you better for a Walt Disney World vacation?"
I'm obviously a little biased, but I don't think there's a website on the Internet that is more thorough with basically "up to the moment" updates on major changes. For example, when Rapunzel moved from Fairytale Gardens to what was formerly called Tour Guide Gardens, easyWDW.com had a full report on lines, wait times, meet times etc. complete with pictures and advice on how to go about meeting her with the least possible wait. A few days later, I went out and timed how long it would take to meet Rapunzel, Tinker Bell, and Ariel along with the best way to do so. Again, complete with a 100+ pictures.
When Rapunzel moved inside Town Square Theater, easyWDW.com again had a full report on FASTPASS return times, pictures of the princesses inside the Theater, wait times, meet times, and how best to meet Rapunzel along with the other characters.
That's just one example.
That's a level of detail that you simply won't find on any other site, regardless of whether you appreciate my "tone" or "sarcasm" you're not going to find better Walt Disney World information anywhere. But I'm biased since I write it.
Anyway, I wasn't going to post in this thread, but since it seems to persist, here you go.
I'm not necessarily interested in debating it or interrogating anyone that doesn't agree that "my site is best," but that's a little bit about where I'm coming from.