ΔE 46.5, loose: different enough that you should pick on purpose. Chipping Medium is noticeably lighter, much more muted than Armageddon Dust.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 47). Chipping Medium is noticeably lighter, much more muted than Armageddon Dust.
The same difference applies the other way round: Armageddon Dust is noticeably darker, much 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 Armageddon Dust on the colour wheel See Chipping Medium on the colour wheel
All matches: Armageddon Dust equivalents · Chipping Medium equivalents