The parity principle applies even where the co-offender was sentenced in a different jurisdiction under a different sentencing regime, and even where the co-offender's sentence is considered inadequate. Courts may intervene to reduce a sentence that falls within the appropriate range where the disparity with a co-offender's sentence is so manifest as to give rise to a justifiable sense of grievance. For methylamphetamine supply of approximately 500 grams at 34% purity, a starting point of 14 years was at the higher end of the range.
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