ΔE 17.5, loose: different enough that you should pick on purpose. Dragon's Gold is noticeably lighter than Greedy Gold.
✓ Two Thin Coats comparison chart lists these two as equivalents.
Can I use Dragon's Gold instead of Greedy Gold?
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Dragon's Gold is noticeably lighter than Greedy Gold.
Can I use Greedy Gold instead of Dragon's Gold?
The same difference applies the other way round: Greedy Gold 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.