Your own statement also contradicts your comparison idea.
How can you compare a part ppc OS4 running on a cyberstorm to ppc MOS on a pegasos.
Mmmh, you can compare, how "finished" both are, on what HW they run, what features
they offer, how stable they are, how good they look, what native SW exist ....
I'll expect quake to run just as fast on MorphOS as on OS4, when both use the same HW,
and have all SW needed for that available in PPC.
Just how long it will be between the 1st and the 2nd to reach that point is a rather
different question.