I will discuss hypergeometric and q-hypergeometric solutions of the equivariant quantum differential equations and associated qKZ difference equations for the cotangent bundle $T^*F_\lambda$ of a partial flag variety. These two types of solutions manifest two types of Landau-Ginzburg mirror symmetry for the cotangent bundle. I will discuss a "gamma theorem", which says the leading term of the asymptotics of the q-hypergeometric solutions can be written in terms of the equivariant gamma class of $T^*F_\lambda$. That statement is analogous to the statement of the gamma conjecture for Fano varieties by Galkin, Golyshev, and Iritani.