Likewise, as Cynical Bear points out, Jael was called blessed "above all women," which entails Jael being in a higher position of blessing, a position of eminence, and some in a lower.
we should rejoice that others are exceptionally gifted
Blessed has nothing to do with being gifted...Especially in the case of Mary...
Luk_1:48 For he hath regarded the low estate of his handmaiden: for, behold, from henceforth all generations shall call me blessed. G3106
G3106
μακαρίζω
makarizō
mak-ar-id'-zo
From G3107; to beatify, that is, pronounce (or esteem) fortunate: - call blessed, count happy.
As we can see, Mary was very happy because she was fortunate to be chosen by God...And she was esteemed by her peers for that action...
Has nothing to do with gifted, or eminence...
Those things are synonymous. To have received grace, is to have received His favor, His gifts, His blessings. God considered the “lowliness” of His handmaid: and He exalts the humble and humbles the exalted.