Far too many people like to blame their failures on their equipment. Native Americans used to kill Deer with a sharpened rock tied to a stick.
Most any well made broadhead will do the trick if it is driven with enough energy and the shot placement is good. For every person who loves the Rage you'll find one who swears they're junk. Push them with enough energy and put them where they belong and you'll kill Deer with the Rage broadhead, which is no different than most any other Broadhead you can name.