They don't in this case. The cards for Dungeons of Dread were prepared months before the rules were finalized. Compare the Grick on the cards to the Grick in the DDXP sample Monster Manual.Spatula said:It was from the RPG stats on a DDM stat card, which as far as I have seen so far 100% reflect the RPG rules.
There are clear differences between what's on the DDM cards from that set to what's in the printed Monster Manual.