CoAdmin should be able to delete comments

wordpress policy seems to be that a level N user can only edit/delete the comments from level N-1 user posts. this is probably why normally users are restricted to level 9 (so the admin user at level 10 can do anything).

this doesn’t really make sense because a level N user can edit the contents of another level N user’s posts.

anyway, the fix is to go through edit.php and edit-comments.php and change code that looks like this:
($user_level > $authordata->user_level)
and add an = sign to make it look like this:
($user_level >= $authordata->user_level)

if you have the wpblacklist plugin, you’ll also want to edit the wpblsearch.php and wpblmoderate.php files.