http://red.ngntfwmwovvku6eqi7dzzgzv2wzlvq2cqtqha7ccgzub2xnivsuxnuyd.onion/r/linux/comments/1mqgzvb/arch_shares_its_wiki_strategy_with_debian
Add on all the other differences, and you may end up with a dozen or so pages per topic, combined with a Wiki system that automatically filters to pages relevant to your distro (which would need to be updated every time a new spin-off distro emerged, as many users many not know their distro is derived from X, so you'd need the user to enter their distro name then use a lookup table behind the scenes to apply the relevant filter.