It seems like this adds much tighter integration between the caller and callee processes used named pipes and RPC communication, such as being able to share input/output streams within the same terminal session, which is a significant value add compared to runas.exe.
Because probably this was pushed due to meet some OKRs ("made an impact").
It adds nothing over runas, other than being a known name to folks educated in UNIX.
Which is hardly of any benefit, given that Windows is not UNIX.