Just my opinion here...
We were at Disney for Jersey Week, Oct. 30 - Nov. 6. This was our third year doing Jersey Week (DD is in 3rd grade). I would definitely say this year was busier than the last two, but we noticed somewhat of a disconnect between the apparent crowds walking through the parks and the wait times on the rides. Even though the parks seemed quite crowded, the waits were minor. Of course, some of the E ticket attractions had lines, but we just used Fastpass to bypass them.
We also noticed on a few occasions that the posted wait times were quite inaccurate. For example, BTMRR had a posted standby wait of 30 minutes. We got in line anyway. We were through the line, done the ride, and back in line to do it again in 17 minutes (yes, I timed it). So in under 30 minutes (which the sign still said when we went in the 2nd time), we actually rode twice. This same thing happened on some other attractions too.
Mid-day on Thursday, we walked right in to Mission:Space. There was no wait at all (Zero minutes on the board). We also walked right in, or had less than 5 minute waits, for many other rides and shows in every park.
So all in all, I agree with those who say the park was more crowded, but I disagree that it made it hard to get on rides or get into shows. Of course, judicious use of Fastpass is a must. Anyone not familiar with FP probably did waste a lot of time standing in lines.