@darthjarjar: Are we talking about Knightfall Vader? If so, his powers compare to Sidious. He can win.
Caedus is hardly comparable to Luke in speed. Luke tagged his kidney with his first strike. He's considerably faster than Jacen. It's a noticeably bigger gap then, say, Dooku vs Yoda in speed. And Anakin's speed is in league with Yoda and Palpatine's; Caedus has no advantages there.
If it wasn't Knightfall then it would be worse for Anakin.
I didn't say that Caedus was as fast as Luke, but he is comparable. I actually think that Anakin could present a difficult challenge to Yoda (only sabers). Still he's a tier below Palpatine and Yoda in speed. Caedus doesn't have any advantages? What force feats allow Anakin to keep up with Caedus? I can only think of one.