It does the same thing... until you need to program it. For most uses, OOo will work great. But more specialized tricks use VBA to combine Office's tools in unique ways.
And OOo doesn't have anything compatible with Access.
If the OpenOffice.org folks can create an Access-compatible DB and a universal, VisualBasic compatible scripting engine for OOo, Microsoft will be in very deep doo doo.
As it is, Office can do things others just can't.
lol....Just a few seconds off with the same post.