Edits by Administrator, Editor, WikiSysop are confusing

I find edits done by these logins to be confusing, and I don't understand the rationale. It's strange because there's no background or context for the content.
A strategy I've used on a few sites is to create logins in the form of <username> - <role> to maintain separate permissions while still providing attribution. It's useful both in recording shared admin work, while still allowing separation of admin/contributor edits.