The problem with partial engine failures is that there are so many different possibilities, you really can't practice for all of them. I was always taught that if you suffer a partial failure you treat it as the worst case and use the EFATO training you have been taught and practiced. In the real event you may have a little bit of power to get you over the hedge but one shouldn't rely upon it. At the end of the day, you do what you can with what you've got and by closing the throttle you can revert to what you have been trained to do.