Redcode vs CinemaDNG raw in color grading

[Shermen L]

Since I’m considering a B-camera like Red Scarlet or Blackmagic Production 4K camera, but they are recorded with different codec, one is Redcode , another is CinemaDNG Raw. As I notice the file size of Redcode Raw is much smaller than the CinemaDNG Raw (around 1 : 6), does it mean the latitude of color correction for Redcode Raw is less than cinemaDNG Raw? I used to shoot 8:1 compression in RED 4K, what I feel confused is that both are raw and 4K,but their file size are so different, I know they both under compression, but will the compression affect the quality of the footage and how it affects the latitude of color correction in both cameras ?

Thanks