∀ {C₁ : Type u_1} {C₂ : Type u_2} {C₃ : Type u_3} {D₁ : Type u_4} {D₂ : Type u_5} {D₃ : Type u_6}
  [inst : CategoryTheory.Category.{v_1, u_1} C₁] [inst_1 : CategoryTheory.Category.{v_2, u_2} C₂]
  [inst_2 : CategoryTheory.Category.{v_3, u_3} C₃] [inst_3 : CategoryTheory.Category.{v_4, u_4} D₁]
  [inst_4 : CategoryTheory.Category.{v_5, u_5} D₂] [inst_5 : CategoryTheory.Category.{v_6, u_6} D₃]
  {H₁ : CategoryTheory.Functor C₁ D₁} {L₁ : CategoryTheory.Functor C₁ C₂} {R₁ : CategoryTheory.Functor D₁ D₂}
  {H₂ : CategoryTheory.Functor C₂ D₂} (w : CategoryTheory.TwoSquare H₁ L₁ R₁ H₂) {H₃ : CategoryTheory.Functor C₃ D₃}
  (eL : C₂ ≌ C₃) (eR : D₂ ≌ D₃) (w' : H₂.comp eR.functor ≅ eL.functor.comp H₃),
  (w.vComp w'.hom).GuitartExact ↔ w.GuitartExact