There is a thread on the Buffy forum about who is more powerful; Willow or the Charmed Ones...
I have my opinion of who is stronger, but I wanted both sides of the argument.
Here is a link to the thread at BTVS: http://www.tv.com/buffy-the-vampire-slayer/show/10/who-do-you-think-is-more-powerfull-willow-or-the-charmed-witches/topic/127-805116/msgs.html?tag=board_topics;title;17
Note, this is NOT Buffy the Vampire Slayer vs. Charmed. It is which witch is stronger.