I don’t believe I’m getting sucked into this discussion, but, assuming that neither party surprised the other, it would have to be Dumbledore. Partly because Jedis are idiots – if you have telekinesis, you don’t fart around with light sabers like some grandiose Heidelberg graduate, you poke a hole in the opponent’s carotid artery or depress their vagus nerve and move on to the next. But we know from the HP books that magicians can erect nearly impenetrable shields, can perform transfigurations, can paralyze opponents, and not least of all, can fly. (What would Yoda do against an opponent strafing curses from a broomstick?) So the first thing that the magician would do would be establish a barrier and then demolish his opponent from behind it.
And really, the curses in the Harry Potter books are pretty tame because Rowlings is a pretty decent (and possibly unimaginative) person. I would rather be hit by the AK spell than, say, have someone transfigure my intestines into asps or fill my lungs with taffy.