Martian Green vs Bronze

How close are they?

ΔE 36.4, loose: different enough that you should pick on purpose. Bronze is noticeably darker, much more muted, warmer than Martian Green.

Can I use Bronze instead of Martian Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 36). Bronze is noticeably darker, much more muted, warmer than Martian Green.

Can I use Martian Green instead of Bronze?

The same difference applies the other way round: Martian Green is noticeably lighter, much more saturated, 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.