User blog comment:Itamar20112/My thought on the wiki post-crisis announcement/@comment-35347921-20200117025635/@comment-25054842-20200117095949

That's different. In the Star Wars wiki the canon and legends version have too many differences. Like Leia and Han having 3 children who grew to be jedi/sith in legends, but in canon they have 1 son with completely different name personality and history. Here for most characters there are the exact same. The only difference is the old ones experienced Crisis, which doesn't justify 2 articles if you think about it.

Also, in Star Wars the wiki knows they have the same history in the first 6 movies, so that information is basically the same in both articles, which makes the reading make sense. Here, look at the Earth-Prime John Diggle page: "John Diggle, also known as Spartan, is an individual residing in Star City." Come on why do we ignore his entire 8 years history? Because according to wiki rules, it wasn't confirmed in-universe they have the same history, so we can't assume that, even though they will basically be the same character. At least in DC database they mention that Batman's parents died in both New Earth and Prime Earth articles (probably because we saw it again in the prime earth), but believe me the CW didn't intend to make a full reboot so they probably won't show his entire history again. Which means we are stuck with this.

And I get that maybe the articles need a clean up, but does that justify having new articles? Can't we just clean already existing articles? And again, with the wiki rules of "if it wasn't confirmed in the show it isn't true" (which I doubt will change), Diggle for example won't get his old information again (because we didn't see his prime-Earth history). So yeah it's a clean up but it deletes everything that defined his character before.. A better clean up would be to adapt what Avatar wiki is doing for example: Main character who have a lot of history have seprate pages only for his history and each pages cover different era/season. So for example Aang has a page of his history in Book One, and then another in Book Two, and so on... and those pages are linked in the character's page of course.