Actually good point, is "SVU" the police ("Order") unit and the prosecutors ("Law") are "Sex Crimes"? Then doesn't the title after the colon undermine the premise of the part before?

I'm pretty sure "Law and Order" referring to the two halves of the episode is only a thing in the original, otherwise it's just the franchise name. SVU and Criminal Intent only had the attorneys show up occasionally, and they're the only two (US) spinoffs that lasted more than a season.