ΔE 16.9, loose: different enough that you should pick on purpose. Light Bronze is noticeably lighter, more muted, warmer than Runelord Brass.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Bronze is noticeably lighter, more muted, warmer than Runelord Brass.
The same difference applies the other way round: Runelord Brass is noticeably darker, 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.
See Runelord Brass on the colour wheel See Light Bronze on the colour wheel
All matches: Runelord Brass equivalents · Light Bronze equivalents