I see your point and also agree, overall, that DHS would be the best spot for a Zootopia land should they want to build one at WDW. I also wouldn't be surprised if Disney didn't really care about any possible similarities and, Tron-style, just looked around for something that could be relatively easily lifted from one resort to the other tied to an IP that, in this case, they seem interested in promoting.
I suppose my feeling regarding the similarity of the experiences is that Disney does have to watch having basically one trick when designing new attractions, or it feeling that way. To me, anyway, this just looks a little too much like a MMRR/Ratatouille hybrid to sit alongside either of those attractions in the same park without it feeling like Disney is starting to just make slight variations on the same ride.
The busbar collection feels a bit different to me as they are relatively minor attractions and aimed at a younger audience. I feel like this would be a little bit more like if, after Pirate's success at Disneyland, the Western-themed replacement proposed for WDW opened up in Disneyland's Frontierland. The big criticism of Universal is that it has a lot of similar, screen-based experiences and one of the issues with EPCOT Center when it opened was that it offered a lot of very similar ride experiences. Cloning Zootopia at DHS wouldn't rise to that level yet, but personally I do feel guests may start to notice that a lot of the recent attractions had a very similar format to the point they would be better off trying something else.