All Unices share a set of APIs, more or less. It''s enough for a comparison.

It''s not so much a matter of Windows having so much more in terms of numbers but, rather, that there''s more to help you out, which is the point of an API.

This argument is getting kind of silly since none of us seem to have pure numbers, nor a unified notion of what''s fair for comparison. By now it''s essentially a flame war.