Ok, actually Dinosaur is the more jerky ride, it wasn't always this way. We had a fatality that was loosely related to the ride, a person who had a preexisting condition, but was unaware of it died shortly after riding. The state of California stepped in and mandated changes to the ride, among these were making the ride calmer and increasing the height limit. After a few more incident, they then went on to mandate that everyone has to be in the room with the safety video for one full loop of the safety video, prior to that those that needed special assistance went through the exit all the way up to the loading dock.
In Florida, until recently, major theme parks did not have to report to any agencies and to a certain degree they still don't. They can fine them, if they find they are negligent, but that is about it. So, for the same attractions, their height restrictions can be lower in Florida, because the state cannot mandate them, in California they can.
That being said, lately, if the rides are exactly the same (i.e. Soarin' over California), they have been keeping the same height restrictions. I would imagine this is being done with consistency.