As a test pilot, those hours sound extremely high and unrealistic. A test pilot is a test pilot, a TP2 might be coming in to do lower risk testing later in a prototype programme and have virtually no time on type, surely?
Is a document somewhere possibly mixing this up with the EASA requirement for 1000hrs on class (e.g. aeroplane, helicopter) and an IR, in order to be considered for approval as a TP?
G