Somehow, the shorter version of Hollywood's keeps the ride moving along. In the case of the River Adventure, bigger isn't always better. However, there are elements in Orlando which are very nice to have, such as the shadow raptors and the more immersive feel. Japan improved on the audio where the dinosaur vocals were in a realistic direction instead of being on the same speakers as the narrator. I have no clue what Japan's fascination with the Mummy score in their theme park and why they added it to the climb inside the building. That was awkward and took me out of the JP feeling.
I enjoy Hollywood's version, probably mostly for nostalgia. Sadly, its tough to go on it sometimes when you know the quality of the experience is so low.