As described in snapshot docs, a Voting Strategy is a set of conditions used to calculate user's voting power. Strategies enable DAOs to calculate the final result of voting on a given proposal.
Each $DUCKIES counts as a point in voting.
For example, Quackie Moonbeam has 4 200 $DUCKIES, thus 4 200 points of voting power. Quack Corrigan has no $DUCKIES and he is not able to vote at all.
Voting points of an account is a sum of its Mythic cards ranks.
For example, Blueberry Quack has 2 Mythics with ranks 10/60 and 42/60, thus his voting power is 52. Cupid Beakerson has 1 Mythic with rank 55/60, thus his voting power is 55.