The indemnities and waivers contained in Section 10 will not apply to the extent of the percentage of liability that a final judgment of a court of competent jurisdiction establishes under the comparative negligence principles of the State of Arizona that a Claim against a Landlord Party was proximately caused by the misconduct or negligence of that Landlord Party, provided, however, that in such event the indemnity or waiver will remain valid for all other Landlord Parties.