18 Bell was considered by this Court in R v Wahabzadah [2001] NSWCCA 253. That was a case, like Bell, where the Court was constituted by two judges and, therefore, is not authority on matters of principle. In Wahabzadah the Court was constituted by Wood CJ at CL and myself. The applicant had relied upon Bell and the decision in R v Muavae [2000] NSWCCA 88 as supporting a similar argument as that raised in the present proceedings. During the course of my judgment, with which the Chief Judge at Common Law expressed his agreement, I stated:
15 While I accept, as I must do, that the principle of parity applies in all aspects of a sentence, including the non-parole period, the principle is concerned with ameliorating a justifiable sense of grievance on the part of the offender. If a disparity is occasioned by the operation of the law, there can be no justifiable sense of grievance arising simply because a proper application of the law in two different cases has given two different results. Specifically, s 44 of the Crimes (Sentencing Procedure) Act mandates that a non-parole period be not less than three-quarters of the term of the sentence unless there are special circumstances for it being less. I do not believe that there is any breach of the principle of parity, simply because different non-parole periods are specified for different co-offenders because of different findings as to the existence, or extent, of special circumstances.
16 There is nothing in either Lowe v The Queen (1984) 154 CLR 606 or Postiglioni v The Queen (1997) 189 CLR 295 to suggest otherwise. Quite the contrary, in the latter case even the majority of the High Court were of the view that there was no disparity by reason of the different non-parole periods specified between the two offenders. Disparity only arises when the difference between the two sentences cannot be justified by a difference in the degree of the culpability of the offenders or in their personal circumstances. A difference in a finding as to whether special circumstances exist is a difference in a finding as to the personal circumstances of the co-offenders, and, if justified on the material before the sentencing judge, there can be no basis in my view upon which any sense of injustice can arise either in the collective mind of the community or in the individual mind of a co-offender.
17 It was submitted, on behalf of the applicant, that two decisions of this Court authorise appellate intervention where there is a disparity resulting from a difference in the finding of special circumstances even if the difference in the findings were justified. In my view, neither of those decisions are authority for such a proposition, but, if they were, I would not be prepared to follow them. But in both R v Bell [1999] NSWCCA 423 and R v Muavae [2000] NSWCCA 88 this Court only held that the personal circumstances of the appellant required a finding that special circumstances existed and the failure of the sentencing judge to do so was an error. In each case the disparity in the minimum terms of the sentences imposed upon the appellant and the co-offender simply highlighted the error that had been made.