Ah found the "real" paper. The authors don't know how the algorithm scales either: "Finally, we note that while our demonstrations of factoring have made use

Ah found the "real" paper. The authors don't know how the algorithm scales either: "Finally, we note that while our demonstrations of factoring have made use of currently available quantum annealers, there is an outstanding question regarding the asymptotic complexity for this approach." https://arxiv.org/pdf/1804.02733.pdf https://arxiv.org/pdf/1804.02733.pdf and go on to talk about the "minimum spectral gap between the ground and first-excited states of the underlying time-dependent Hamiltonian" which might as well be something spoken in the engineering section of the Voyager to me.