just depends on what you have installed. lol it only allows root access... installing widgets and other stuff that has daemons, of course you are going to cause it to drain due to you having something running, tweaking a plist file to show the native stat usage thats already built in to iOS, or facetime over 3g.. isnt doing anything your device is already doing.
logging onto my computer as "admin" isnt causing more batter consumption as to logging on as "guest"