Exactly. "only users who can approve items (and author of the item)" itself tells you that the draft items are visible only to the approvers.
In order for users to see their own drafts, Select the second option, "Only users who can edit items" in Draft item level security.
Second thing is change in the "Advanced Settings"
In Item level permissions -> Edit access change to Only Their own.
Please note that these changes needs to be done on Comments list
Hope this helps,
Regards | Rohan | Sharepoint Technologies | http://sharepoint-administration-eu.blogspot.com/