No attorneys from that state are on the boards. Unless the state has a mandatory sentencince scheme, you really can't compare cases. Each defendant, each case, each judge and each prosecutor are different.
If your cousin is serving a sentence AND probation time, that indicates he has two different cases. If he was on probation for a drug charge and rolled another drug charge, that can really upset his judge.
If a sentence has been imposed, a defendant typically has two remedies: 1) a motion to the sentencing judge asking him to be nice; or 2) an appeal to a higher court arguing that the sentence was excessive (which normally won't go anywhere).