Why isn't scavenger Rey any good for sith raid?

I still use RT. It does 6 or 7 million, which is still top for p1 in ours. He crits around 40 to 60ishK. Marginally lower than Finn, but exponentially faster from tm gains non speed related.

I think it is all in the mods. If you slack speed mods for finn, then RT may be your better option as scaling offense is less rng dependant than slicing for speed due to the primaries.