  According to supersimplicity in MSSM, a renormalization scheme (SRS) may be
defined for any high energy 2-to-2 process, to the 1loop EW order; where the
helicity conserving (HC) amplitudes, are expressed as a linear combination of
just three universal logarithm-involving forms.
  All other helicity amplitudes vanish asymptotically. Including to these SRS
amplitudes the corresponding counter terms, the "supersimple" expressions for
the high energy HC amplitudes, renormalized on-shell, are obtained.
  Previously, this property was noted for a large number of processes that do
not involve Yukawa interactions or renormalization group corrections. Here we
extend it to $e^-e^+\to t \bar t$, which does involve large Yukawa and
renormalization group contributions. We show that the resulting "supersimple"
expressions may provide an accurate description, even at energies comparable to
the SUSY scale. Such descriptions clearly identify the origin of the important
SUSY effects, and they may be used for quickly constraining physics
contributions, beyond MSSM.
