I mean it's should be just generally resistance to absolute solver.
Higher administration should overpower another administrator through higher scaling of the solver.
We should understand that Uzi got her solver trough Nori genes,
which was the only stable and surviving host of the solver (except the same Yeva, the reason why she is survived since she was a patched host, that's should be explained why we never saw her transform into her solver with wings and tail, and that's should explain why Cyn wasn't interested on Doll) so that's means that her solver is way more powerful than doll