All the parks can have on and off days but I think
@IzzyB is pretty spot on. The magic bands have made a huge dent in the time it takes to get into any of the Disney World parks, and in my opinion it feels like universal's time to enter has gone up.
In my opinion MK rope drop vs HHN shows just how big of a difference there is. I know that HHN security is at a much higher level than normal but the amount of confusion and time it takes after getting through security should be a semi fair comparison.