User blog comment:LoverofAllThingsCute/Wikia Feature Proposal: Special Priveleges for Rollbackers/@comment-1142365-20140726131446

Your understanding of what rollbacking an edit does is incorrect. Firstly you're not really rollbacking an edit, you're rollbacking a page; rollbacking a page will revert it to the last version by a different editor. Let's say editor A made 140 spam edits to a page, after editor B makes 1 good edit to a page. Rollbacking the page will "undo" all 140 edits at once and return it to the version from editor B. Undo revision will only undo the most recent edit from editor A.