ΔE 25.5, loose: different enough that you should pick on purpose. Screaming Sun is a little lighter, much more saturated, cooler than Phoenix Flames.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Screaming Sun is a little lighter, much more saturated, cooler than Phoenix Flames.
The same difference applies the other way round: Phoenix Flames is a little darker, much more muted, warmer.
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 Phoenix Flames on the colour wheel See Screaming Sun on the colour wheel
All matches: Phoenix Flames equivalents · Screaming Sun equivalents