I honestly don't know. Both systems use PHP, but I don't know how much of a draw on PHP's memory limits one is over the other.
ETA - Update: Finally back on my home box, so I checked to see if I could break the system. I dumped my copy of ItGWO: Listening to the Birds - something I *know* will break DokuWiki if I tried to load it all in one page - into a MediaWiki page and it held up. So the problem *might* be fixable using MediaWiki, but milage may vary.
Mr. Fnord interdimensional man of mystery
FenWiki - Your One-Stop Shop for Fenspace Information
"I. Drink. Your. NERDRAGE!"
ETA - Update: Finally back on my home box, so I checked to see if I could break the system. I dumped my copy of ItGWO: Listening to the Birds - something I *know* will break DokuWiki if I tried to load it all in one page - into a MediaWiki page and it held up. So the problem *might* be fixable using MediaWiki, but milage may vary.
Mr. Fnord interdimensional man of mystery
FenWiki - Your One-Stop Shop for Fenspace Information
"I. Drink. Your. NERDRAGE!"