Yeah, if he taught him some magic! But he didn't, so it doesn't work.
[Makes a face as he contemplates this] I guess he's more like Obi-Wan, if Morgana's Darth Vader, but then the whole I'm your father becomes really, really awkward. And inaccurate.
[But then he suddenly lights up] Dude, no, Merlin's got to be Luke, and Arthur is Han and Guinevere is Leia except in this version, Han gets together with both of them!