22 years, you will get less for manslaughter anywhere
Bet you the Puerto Rican terrorists who shot up the Capitol in 1954 served less time than this guy will.
here are three current news stories regarding sentencing of persons convicted of manslaughter (I picked the first three; a valid study would have a minimum of thirty):
10 years
https://www.fox19.com/2023/09/05/judge-sentences-man-convicted-fatal-bicyclist-hit-and-run-newport/
24 years
life
Based on my admittedly small sample, sentencing for manslaughter ranges. Sometimes less than 22 years. Sometimes more.
I read an article stating that in DC the average sentence for armed robbery was 5.5 years and for murder was 7.5
years.
And no parole or early release in federal prison.