Board Thread:Reference desk/@comment-4028641-20121204012342/@comment-4139960-20121204121820

They're Cybermen which are from different universes and significantly differing origins, while the Master (and any Time Lord that isn't Romana or the Doctor) is the same individual being with really convoluted dabbing. (Mondas) and (Pete's World) aren't, even if one could argue "Pete's World" is a little informal a way of describing the parallel Earth (if it wasn't called that on this wiki, I probably wouldn't have noticed the phrase in Doomsday). Strongly opposed to moving them to one page. If they developed independently in the same universe I could possibly argue the fact, but as the Army of Ghosts/Doomsday/The Next Doctor Cybermen are from a parallel Earth, thus they fit the same pattern as Peter Tyler (Pete's World) and Jackie Tyler (Pete's World). IIRC, Cyberman was for some time the page for the "normal universe" Cybermen alongside Cyberman (Pete's World), rather than an overview page.

(As a side-note I'm guessing OS has confused the Craig Owens stories The Lodger and Closing Time, as The Lodger doesn't have any Cybermen)