I am wondering it you have a document somebody created in place of the op lims that were issued with the airworthiness certificate. The operating limitations are part of the required documentation along with the airworthiness certificate. The op lims are written strictly according to guidelines set for by the FAA, and DARs have to follow them.
Performance data is not a part of the FAA's op lims.....it can't be because the aircraft hasn't flown at the time the airworthiness cert and op lims is issued.