  The Equivalence Theorem is commonly used to calculate perturbatively
amplitudes involving gauge bosons at energy scales higher than gauge boson
masses. However, when the scalar sector is strongly interacting the theory is
non-perturbative. We show that the Equivalence Theorem holds in the large N
limit at next-to-leading order by calculating the decay widths h -> W^{+}W^{-}
and h->\pi^{+}\pi^{-}. We also show, in the same scheme of calculations, that
unitarity is fulfilled for the process h->\pi^{+}\pi^{-}.
