Mind giving your source? I found 2.5k/kg for falcon 9 vs 5k/kg for soyuz. The shtil is as far as I can tell military surplus and is now retired, so it’s costs aren’t really reflective of long term usage.

https://georgetownsecuritystudiesreview.org/2023/04/20/t-minus-6-seconds-starship-and-humanitys-next-major-step-into-space/

https://marspedia.org/Financial_effort_estimation