Well, there's been arguments put forward that this
sort of thing is a
"fork" that does indeed harm Wikipedia (and perhaps the forked wiki too)
by subjecting both to contributor drain - if the two wikis were merged
they'd each have more people working on their contents. I'm not so sure
about this, but I nevertheless think it's probably a net loss to be
deleting content from Wikipedia that's perfectly acceptable for other
encyclopedias to cover.
The problem with this is, that Comixpedia is a collection of all
webcomics they can think of there's no editorial control and literally
anything can get in. Merging that with Wikipedia would introduce
scores of what are basically vanity articles for the creators. Just
try arguing for undeletion with a solid claim backed up by references.
--Mgm