The CWAL Rubber Room
"WHERE THE HELL IS MY FOOT?!?"
And, if I'm recalling correctly, they both decided on Brandon Sanderson together. Robert Jordan himself spent many of his final days doing outlines and writing the final scene of the story.
Sorry if I'm repeating information you already know. I know that drives me crazy.
I mean, there are differences...but definitely not to this degree. Certainly not enough to justify an entirely different way of magic!