Even with those facts, it doesnt change the fact the average nationwide for rape is 4 years.
This just might.
According to the US DOJ Bureau of Justice Statistics's November 2018 Bulletin, your "4 year" statistic is incorrect. The median (i.e., the "middle") prison time served for "rape/sexual assault" is 4.2 years. But the mean (i.e., the "average") prison time served for "rape/sexual assault" is 6.2 years.
Additionally, these statistics do not include time spent in jail. So, for instance, when an accused individual awaiting trial is unable to make bail, they will be spending that time locked up in jail (thus making up an additional period of incarceration not included in these statistics, and increasing the total length of incarceration). It was more difficult to find recent statistics from a credible source on this, but according to a 2000 BJS report the average time from arrest to sentencing for all felonies was 219 days (back in 1996). So you should basically include another 7 months of incarceration for anyone who can't make bail.
It's also important to note that criminal statutes vary greatly by state, and these statistics combine "rape/sexual assault" into one category. This is critical, as some states define sexual assault as unwanted sexual contact (e.g., groping, fondling, etc...) short of rape or attempted rape. Certain entertainment "news" outlets that are more interested in sensationalizing the "news" to increase viewership will then report these statistics under the blanket term "rape," when in reality they encompass lesser (albeit, serious) *** crimes.
If you take a moment to review the link below, you'll also note the average prison sentence length for "rape/sexual assault" is 12.2 years. So contrary to your contention that "activists judges" are the reason for what you perceive as a low amount of time spent incarcerated, the facts suggest judges are sentencing these convicted felons to heftier prison time, but they end up serving much less of their sentences (for reasons that are obviously outside the judge's control). Perhaps if privatized prisons and CO unions weren't so intent on keeping non-violent offenders in prison (because they're easier to handle and good for business), there might be more room for these violent offenders to serve more of their sentence.
https://www.bjs.gov/content/pub/pdf/tssp16.pdf
https://www.bjs.gov/content/