No, they are not the same. IEditEvents is the event interface for the ArcMap Editor. It's events fire anytime the appropriate actions are executed using the Editor. IWorkspaceEditEvents is the event interface for workspaces. It's events fire anytime the appropriate actions are executed against the specific workspace it is being used in conjunction with. If you are editing a particular workspace with the ArcMap Editor, then the events on the IEditEvents interface should fire the same as the events for IWorkspaceEditEvents setup to listen on that same workspace. If you have IWorkspaceEditEvents setup to listen to workspace "A" and the Editor is set to edit workspace "B" then the two sets of events will not be synchronous as your listeners will not be listening to the same workspace.
