Ok so I think know what you’re trying to say. He’s saying the difference between a common MS 1969-S and a MS DDO 1969-S is 12,000 times. So if there was to be a uber rare coin (1964-D SMS cent?) and it was also a DDO it would be worth many monies.
And even more if it were struck through a fragment of unicorn horn, no doubt. To look at it another way: value isn't just proportional to rarity. A coin with a population of several hundred thousand might be worth thousands of times face value (1909-S VDB, 1916-D dime), or it might be worth a slight premium over melt (many Barber halves). A coin with a population of a few thousand might be worth even more (Charlotte or Dahlonega gold), or again only melt (First Spouse gold). But a coin with a population of zero is always worth the same thing: zero.