ΔE 18.4, loose: different enough that you should pick on purpose. Doom Death Black is noticeably lighter than Abaddon Black.
✓ Two Thin Coats comparison chart lists these two as equivalents.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Doom Death Black is noticeably lighter than Abaddon Black.
The same difference applies the other way round: Abaddon Black is noticeably darker.
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 Abaddon Black on the colour wheel See Doom Death Black on the colour wheel
All matches: Abaddon Black equivalents · Doom Death Black equivalents