Personally, it looks like Disney is trying to respond to UO's Mummy. It seemed not too long ago that Disney would create something and then UO would try and copy it. Now it seems that the reverse is true.
By the way, in response to the person who didn't like the Mummy ride: I have an ear condition that prevents me from going on most coasters, simulators, etc. However, on the AP holders preview weekend for Mummy, I was able to ride it twelve times without getting sick once. You may want to try it again and see if you think it is still "too jerky and rough".