Do you actually want help or was that a rhetorical question?
If you actually want help than it would be useful to also describe the situation in which you were doing 7k less dps than when using Singular. Was it on target dummy or in a dungeon or raid? Was it single target or multi? What's your ilvl? Are you using one of the presets in KittyDru? and if so which one? If you are not using a preset, what changes have you made to the settings?
I would really like to help you out but I'm going to need a little help from you first

. I myself have personally found this CR doing 5k more dps than singular when attacking a target dummy for 10min.