Finite Quot schemes and strange duality

Assume a general sheaf in $M(e)$ is locally free, let $V$ have Chern character $e^*+f$, and assume $\chi(e\cdot f)=0$. Let $\operatorname{Quot}(V,f)$ parametrize quotients $V\twoheadrightarrow F$ with $\operatorname{ch}(F)=f$. In the setting above, suppose $\operatorname{Quot}(V,f)$ is finite and reduced. Finite Quot scheme strange-duality conjecture.

$$\#\operatorname{Quot}(V,f)=h^0(M(e),\mathcal{O}_{M(e)}(\Theta_f))=h^0(M(f),\mathcal{O}_{M(f)}(\Theta_e)).$$

This is a numerical formulation of strange duality in the finite, reduced Quot-scheme setting. The source presents the assertion as a conjectural reduction and does not establish it in general.