Um, WTF? Same exact crime, yet he got 60% more jail time? Is this pure anti-male bias or is there more to it?
It might be something as simple as different judges/juries. They were probably tried separately, and maybe his judge/jury just had stronger feelings about sentencing than hers did. If he had instead been tried by her judge/jury and vice/versa, she might have been the one to get eight years, and he could have gotten five.
There could be a lot of factors involved in the different lengths of the terms, not necessarily having to do with any anti-male bias.
Punishment for a given crime should not be subjective. It isn't in the bible.
This strikes me as being by definition an error in the process of adjusticating justice, when two convictions for the exact same crime in the same jurisdiction carry different penalties.