Even ignoring all the other aspects of one working and the other not; The big one is even with the musk grift the cost to taxpayers is orders of magnitude different.
SLS is Over US$2 billion excluding development (estimate) per launch. While Space X just upped their cost estimates in 2022 to $67 million per launch.
You are not comparing apples to apples though. How much did SpaceX’s cost to develop?
SLS cost to develop so far: US$23.8 billion nominal
Falcon 9 cost to develop so far (note this was for falcon 9 1.0)(estimate): US$300 million
Once again, not even close.