The point was about having to win a duel to win the Elder Wand. Malfoy and Dumbledore didn't fight a duel; and neither did Malfoy and Harry. It was enough, in Harry's case anyway, simply to grab the other wizard's wand to become its master.
I think that the Elder Wand was not "won" simply by who happened to take it; and therefore, I don't think that the wand would have done anything special for Draco Malfoy.
There's a loose end there, by the way. I didn't check in HBP for the specifics, but I don't see how Dumbledore's wand actually ended up in his tomb. If Malfoy lost the wand, and Voldemort ended up with it, then I think Voldemort would still be its "master" if mere ownership was enough.
But Voldemort wasn't its master, because the wand didn't choose him. It chose Harry, though. And I think that choosing was done on the basis of the "Third Brother," who did not try to cheat death. Voldemort tried to cheat death. Malfoy, a coward, did as well. But Harry didn't cheat death, and so became its "master."
In a Scriptural sense, it brings to mind Matthew 25:29, For to everyone who has will more be given, and he will have an abundance. But from the one who has not, even what he has will be taken away.
Hey! No quoting scripture on a Potter thread unless it’s accompanied by the obligatory assurances of us all being cast into the firey pit!
Right and wrong--I just reread that part, oddly enough. HP explains to LV, while they circle each other before their final duel, the difference between the winning and the taking of a wand. Draco did win the wand, in spite of there having been no duel, because he disarmed Dumbledore. The wand was buried with Dumbledore, but it was no longer his. Pages 742-743--HP explains it better than I can. He even demonstrates that the Deathstick was Draco's.
Had Draco somehow ended up with the Deathstick before he'd been disarmed by HP at the Manor, I have no doubt he could have used the wand to great advantage.
Since the other won’t fit...