Diffrerence here with the example of Vincent operating ZK reg acft in Aus is that the NZCAA requirements for Part 121 are actually more restrictive than on the western side of The Tasman (in this example at least).
Wasn't aware of the 500 hour TT requirement for F/O's before operating 121 aircraft but was aware of the requirement to have 500 hours 121 time before operating as PIC on 121 aircraft. This is not a requirement in Aus (VH reg acft).