one site bases their updates by what people send it while they are there.
i heard a few of those peeps state they were going to list just the opposite for a lark.
now that is mean.
I'm not sure how accurate any of these sites are but:
1) look at the cost of Universal Express passes--they are dynamically priced. So the days that Universal expects to be the busiest, the express passes also cost the most.
2) touringplans.com has started tracking Universal crowd levels. you can get full data with a wdw subscription (for the moment at least).
3) undercover tourist has a crowd calendar as well. no idea how accurate they are (they also have a wait time app).
1) look at the cost of Universal Express passes--they are dynamically priced. So the days that Universal expects to be the busiest, the express passes also cost the most.
From the main Touringplans page click the More tab.It says Universal Orlando at the bottom of the list .Click it .That will bring you to the Universal info