To put this into its proper perspective, see table 7 here: https://www.ussc.gov/sites/default/files/pdf/research-and-pu... In 2022, the average murderer in the Federal Southern District of New York (N = 58) was sentenced to a median of 231 months, which comes out to 19 years and change. No crime of any type had an mean or median sentence higher than 25 years; most were far less than half. So it should be really hard…
However, the other thing I'd point out is that murder is rarely a federal crime - it's usually a state crime. I was curious as to when it becomes a federal crime and found this: https://www.greenspunlaw.com/library/when-murder-is-a-federa...
Dollars-to-donuts that the vast majority of federal murders here were drug related. Not that I think the that makes it in any way better, but in many ways gang violence is more of a war than an individual, targeted killing. These types of circumstances matter when it comes to sentencing, and I'm not surprised at all that SBF's sentencing is longer than you "average" federal murder sentencing.