Interesting question. I went back and looked at the wait times we recorded for Saturday, October 1, 2011 to see how busy Epcot was.
The highest posted wait time we recorded for Soarin' was 80 minutes between 3 and 4 pm. The peak posted wait we have for Sum of All Thrills was around 15 minutes. The highest posted wait for SSE was 20 minutes, and the longest actual wait we have recorded is 4 minutes.
The highest posted wait for Test Track was 100 at 4:30 pm. Test Track, however, went offline from around 1:45 pm to around 2:30 pm. Based on that, the posted standby wait may have been inflated by FASTPASS guests who were denied rides during the outage, who later returned to do so. The posted wait dropped to 30 minutes by 5:45 pm.
We don't have any actual wait times for Soarin' or Test Track on October 1, 2011. A good rule of thumb, though, is that actual waits are 80% of posted. (There's a lot of variation in this, but it's a decent starting point.) That would make the peak waits in line for Soarin' about 64 minutes, Sum of All Thrills around 12 minutes, and Test Track 80.
Translating those to our 1-to-10 scale, Soarin', SSE and Sum of All Thrills would be a 1; Test Track would be a 10, but again, the outage skews that number a lot.
So, broadly speaking, the wait times for Epcot last Saturday, October 1, were either a 1 on our scale, or pretty close. I don't see anything obvious in the wait times to indicate that we were off substantially.
That being said, the lines for the food in World Showcase were long, and the drunk college kids made that experience unpleasant. But the crowd calendar doesn't measure those things (yet). If you're concerned about wait times at attractions, though, October 1 looked pretty good.
Let me know if this isn't clear. Thanks for the question.
Len