Please, do not compare what we are not able to compare.
OS4 is not available for the end-user at all, MorphOS is but does
not have all of his features yet, so it's a bit pointless.
We could compare the feature list of each one, but we know all, that
some features will be added/removed for some reason.
Or we can compare of what we have heard...
Someone talk about Roadshow he use everyday for 3 months, great,
but it's not available at all, Amitcp 5 is also accessible to the
MorphOS developpers but not to the end user too.
So we can't say, one has a tcp/ip stack and the other one, no.
The only thing we can tell is, MorphOS is actually available to the
end-user in its beta-stage and OS4, no. Period.