ΔE 12.6, fair: the same colour family, but not a straight swap. Gold Brown is a little lighter, more muted, cooler than Weapon Bronze.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Gold Brown is a little lighter, more muted, cooler than Weapon Bronze.
The same difference applies the other way round: Weapon Bronze is a little darker, more saturated, 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 Weapon Bronze on the colour wheel See Gold Brown on the colour wheel
All matches: Weapon Bronze equivalents · Gold Brown equivalents