Magically powerful

[revealme4u]

No: HPFGUIDX 121788


Vivek wrote:
I was wondering what being magically powerful means. I mean, everyone 
(in WW) has magical powers, but still some people are referred to as 
being magically powerful e.g. Dumbledore, LV, Bartius Crouch Sr. etc, 
and some are said to be the reverse e.g. Fudge (I think Hagrid or Sirius 
said that). In a recent chat JKR has said that Harry will become more 
powerful, so what exactly does being more powerful imply? And how is 
a person's magical ability measured?
 I guess at least one of the parameters could be magical knowledge 
that a person has, but having power without knowing how to use it is 
useless. So wouldn't Hermione thus be more powerful than Harry?

I don't know if this has been discussed before, if it has then
please 
guide me to the suitable post.