why? isn't it how we used to name groups when tests were in one file ? What is the purpose of detailing information on what user is used in test, within group name? 
If  user detail is needed i would rather change method name to ArticleComments_001_userEditComment than changing group names.

 Chaged groups namens give mess in numeration like: "ArticleCommentsAnon_001" is group of method named  "ArticleCommentsAnon_003_replyComment"