Only 33% of the cases even result in an arrest [1] and 6 in 1000 cases actually result in jail time. That only 384/1000 are even reported to police shows what people think their options are in getting justice. (US is not an exception by any means.)
Well, sure, it's an outlier in such cases because it was prosecuted at all. But that's probably the opposite direction that the claim upthread meant to imply.
Skimming through your link, I don’t see anything involving someone with a single joint being incarcerated for anywhere near a rape charge.
Some of those sentences may be out of line on their own, but you also don’t have people being put away for 20 years for being caught smoking a joint.