there's also the debate though about what defines "power feeding". Some people are of the opinion that if you offer food to the snake (lets say... every other day), and it eats with no problems, then as long as the snake is progressing naturally (defecating,shedding,etc...), then it is okay.
.........
then there are people who will feed a snake and then as the first meal is going down, they force another one (or two) down at the same time.
.........
I'd like to throw the disclaimer out there that I'm neither supporting nor admonishing either practice as I don't believe there are enough long-term studies out there regarding the health benefits of this. If I had to guess though, I'd say that it would be better to take the more conservative approach to feeding, since snakes (of any species) are probably not eating multiple items in one sitting.