Aggro scale is never a good way to judge damage output comparing yourself to other drg's based off of that is not going to get you any type of solid data. there is a million and one ways to improve food, melds, gear etc etc. if you think your rotation is off change it here and there until you think it is better and get someone to parse you. there is solid video from dervy on youtube I believe he released it for 3.4 talking all about rotation that should help as well.