ΔE 15.0, loose: different enough that you should pick on purpose. Dryad Bark is a little darker, more muted than Waffen Red Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Dryad Bark is a little darker, more muted than Waffen Red Brown.
The same difference applies the other way round: Waffen Red Brown is a little lighter, more saturated.
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 Waffen Red Brown on the colour wheel See Dryad Bark on the colour wheel
All matches: Waffen Red Brown equivalents · Dryad Bark equivalents