Well, as we know the Nero and Kona had different suppliers, too, although the specs were the same.
There is a lot of conflicting info out there about the Solterra and bZ4X with the different reviewers and "brochure" specs. Will have to wait until they officially publish them on their company websites. And then the real world tests will happen after the initial customer deliveries when we will learn the real truth.
I put in a pre-order today for the bZ4X, but with some slight differences, it does not sound as good as the Solterra. All my pre-orders are refundable, and will have a lot more time before I ever see and test drive one. So will just have to wait and see.
I have a much better idea about the Ioniq 5 as I was actually able to test drive one, and it has been in customer hands for about a year now. So I am more confident with that one.