21 thousand skeletons??? Lucretia has 10 times less. Some other hero has an incorrect number of skeletons.
No, everything is correct. Lucretia was converting the annual supply of T.E. into vampires, while Lord Haart was converting the annual supply of T.E. into skeletons.
T.E. 37,680 = 1884 vampires (or 1300 enhanced)
T.E. 37,680 = 18,840 skeletons (12,560 enhanced skeletons)