Neb. Rev. Stat. § 29-2521.03: Neb. Rev. Stat. § 29-2521.03

The Supreme Court shall, upon appeal, determine the propriety of the sentence in each case involving a criminal homicide by comparing such case with previous cases involving the same or similar circumstances. No sentence imposed shall be greater than those imposed in other cases with the same or similar circumstances. The Supreme Court may reduce any sentence which it finds not to be consistent with sections 29-2521.01 to 29-2521.04 , 29-2522 , and 29-2524 .