ΔE 9.6, close: similar, with a visible difference side by side. Oxide Brown Dark is a little lighter, cooler than Mud Spatter.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Oxide Brown Dark is a little lighter, cooler than Mud Spatter.
The same difference applies the other way round: Mud Spatter is a little darker, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Mud Spatter on the colour wheel See Oxide Brown Dark on the colour wheel
All matches: Mud Spatter equivalents · Oxide Brown Dark equivalents