I think it's more complex than total rights. ....
Yes, totally agreed. And it sounds as though Disney is not pushing the envelope in Fl regarding potential weak spots in the Universal contract (which overall actually appears pretty ironclad in several key aspects.)
My layman's guess is that Disney will wait and see what the return on investment is on Marvel in CA before pushing said envelope. While trying to work it out with Universal, even if that means buying off some of the contract limitations. If that fails and Marvel DCA is the cash cow they intend, at some point the courts will be brought in to decide.