We establish a super duality as an equivalence between Whittaker module categories over a pair of classical Lie algebra and Lie superalgebra in the infinite-rank limit. Building on this result and utilizing the Losev–Shu–Xiao decomposition, we obtain a super duality which is an equivalence between module categories over a pair of finite W-algebras and W-superalgebras at the infinite-rank limit.
Cheng et al. (Tue,) studied this question.