ΔE 13.9, fair: the same colour family, but not a straight swap. Rusty Metal is a little darker, more saturated than Bitz O'Tin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Rusty Metal is a little darker, more saturated than Bitz O'Tin.
The same difference applies the other way round: Bitz O'Tin is a little lighter, more muted.
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 Bitz O'Tin on the colour wheel See Rusty Metal on the colour wheel
All matches: Bitz O'Tin equivalents · Rusty Metal equivalents