Why the venom? Well Rowling seems to have claimed to have just discovered that her books are science fiction and now seems to be claiming to have saved the genre from its boring roots.
I am biased. I am fanatic for the wit, the vision, and the variety of Terry Pratchett and his discworld novels. Pratchett is to Rowling as Shakespeare is to Stagno. She cannot even dare to get close to him. Sales wise she does of course... which does not prevent TP's books from hitting the top of the bestsellers list weeks before they are released (thanks mainly to Amazons pre-release purchase possibilities).
So go on Terry... dis the bit*h and show her what it is really like to write fiction. For Tp's comments on Rowling read here.
The pen is mightier than the sword if the sword is very short, and the pen is very sharp.