Searching Google Groups hasn't turned up any discussion. I have been doing some work with TikiWiki and have got into trouble with my users because its backup system didn't. I know, too, that TikiWiki is extremely feature-filled, with much stuff that we're never likely to need or use.

Don't make a meal of this request, but I hope someone who has developed for or made serious use of both can offer me a few words as to how or why they settled on one or the other.