The parity principle does not extend to correcting disparities in sentences that arise from prosecutorial decisions about charge selection, where co-offenders are convicted of different numbers of offences. A sense of grievance about the prosecutorial decision-making process is not a justifiable sense of grievance in the Lowe/Postiglione sense concerning sentences imposed. Where an offender stands for sentence on more offences than a co-offender, a greater effective sentence is an inevitable and legitimate consequence.
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