Where one co-offender is subject to the 80% non-parole requirement under s 161A of the Penalties and Sentences Act 1992 (Qld) and another is not, the parity principle is to be applied by comparing head sentences only; the differential effect on parole eligibility does not justify reducing the head sentence below the otherwise appropriate level. The serious violent offence provisions displace the parity principle to the extent of the different treatment they direct.
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