ΔE 28.1, loose: different enough that you should pick on purpose. Leather Brown is noticeably darker, much more saturated than Warrior Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 28). Leather Brown is noticeably darker, much more saturated than Warrior Skin.
The same difference applies the other way round: Warrior Skin is noticeably lighter, much 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 Warrior Skin on the colour wheel See Leather Brown on the colour wheel
All matches: Warrior Skin equivalents · Leather Brown equivalents