Gold vs Weapon Bronze

How close are they?

ΔE 15.1, loose: different enough that you should pick on purpose. Weapon Bronze is a little darker, more saturated, warmer than Gold.

Can I use Weapon Bronze instead of Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Weapon Bronze is a little darker, more saturated, warmer than Gold.

Can I use Gold instead of Weapon Bronze?

The same difference applies the other way round: Gold is a little lighter, more muted, cooler.

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.