The point is that while Tolkien sought inspiration and thematics in other kinds of work of art (epic poems, opera,) and religion, his work takes on a new shape and, additionally, is a part of the whole mythology Tolkien created for the English culture.
And while he wasn't the first author in the world to write epic fantasy, he was (and is) the most important one, and without him, I doubt fantasy would be where it is today.
I'm not saying that anyone should invent something new each time they write a book. It's practically impossible to think of something someone hasn't already thought of, or that isn't a mix of two or more exisitng ideas.
Jordan, however, is much more blatant, and copies from the same genre (and this isn't illegal or unusual, it's rather the norm). And his plot is just more messy, not better.
And because it's quite fun I thought of a couple more of the similarities between their works:In the third age (this was almost too much), Frodo gets a wound that never completely heals, and which constantly pains and plagues him. Rand gets a wound that never completely heals, and which constantly pains and plagues him. Padan Fain, Gollum, Gollum, Padan Fain... (both goes from being essentially good people to being twisted by a "cursed" artifact which they long for and which drives them crazy)
Then there are other element from the Wheel of Time that most clearly derive from Dune: Rand / Paul Atreides : Messiah figure from the outside leading great rising of desert warriors (Aiel / Fremen) in fulfillment of prophecy. Has powers usually only available to women. There are also similarities in the way we see both characters develop: a young, rather naive and powerless adolescent changes into an extraordinary leader with great powers.
Aes Sedai / Bene Gesserit : Powerful, secretive and manipulative female caste with extraordinary powers, sometimes known as witches. Both go through intensive training and painful rites of passage. Also very similar internal power structures and mindsets.
Aiel / Fremen: Kick-ass desert warriors who ally themselves with the Messiah figure.