There's another funny thing which might fit into this topic, namely that 12 is the "low diamond seed" and 14 is the "high diamond seed"!
What I mean by this is that in any BD1/2 caves where seed 12 is used, there are remarkably few diamonds, and many diamonds with seed 14.
Let's go through all the caves where seeds 12 and/or 14 occur:
Boulder Dash 1, cave A
Random Seeds: 10 11
12 13
14
Diamonds available: 18 20
15 23
26
Boulder Dash 2, cave A
Random Seeds: 11
12 13
14 15
Diamonds available: 6
5 6
12 7
Boulder Dash 2, cave F
Random Seeds: 10 11
12 13
14
Diamonds available: 35 47
39 39
49
Boulder Dash 2, cave G
Random Seeds: 10 11 15 13
14
Diamonds available: 12 18 15 18
19
Boulder Dash 2, cave K
Random Seeds: 10 11
12 13 15
Diamonds available: 26 28
22 25 28
Boulder Dash 2, cave L
Random Seeds:
12 8 7 9 11
Diamonds available:
35 36 33 37 34
Boulder Dash 2, cave P
Random Seeds: 10 11
12 13
14
Diamonds available: 41 45
38 34
42
We can see that in the caves with low diamond densities (<30 diamonds), the orange values are always smallest and the green values biggest!
Of course, a BD scientist also has to consider the counter-examples, and in the caves with high diamond density (>30 diamonds), both seeds, 12 and 14, can lose their top/flop positions!
Also when I create 5-level caves for the Dustin's BD series, I sometimes get confronted with that phanomen. If I intend to use seed 12 with a low diamond density, I automatically have in my head that there're not a lot of diamonds to await!
One more interesting note: In BD2-G, we clearly see that seed 12, which "belonged" into level 3, was replaced by 15. I'm pretty sure the reason is this very topic! If you change the seed of this cave to 12, there're only 6(!) diamonds available, which is only half the amount of level 1, which has the least diamonds of all levels! I guess the creators didn't like the cave with so few diamonds so they just skipped the seed!
