Jimmy Wales wrote:
One of the checks and balances against triviality is "can it be confirmed?" Another important one is "has anyone bothered to write about it?" Mass-imports defeat this latter check, and so are subject to a higher degree of scrutiny than hand-edited entries.
I don't think the latter one's really relevant in this case: the only reason the sep11 entries have drawn more work than the ww2 victims is that Wikipedia did not exist during ww2. If it did, it's quite likely everyone would've been adding entries as the body bags of their friends came in.
-Mark