It will be interesting to hear what they say. I can find nothing in the rules of golf that define a double eagle.
While either are great accomplishments, I stand by my belief that an ace is not as difficult as a true double eagle because an ace requires one good shot while a double eagle on a par 5 require two. I have seen dozens of aces on par 3 holes and I have seen 5 aces on par four holes, I have only seen one double eagle on a par 5 and that was actually standing on the tee box next to the green where the double was made, I still haven't been in a group where a player made one.
Not meaning to diminish the meaning of either. I have four aces in real golf, all on par 3's and back when I was younger came very close to an ace on a par four, short 285 yard hole and I have a number of eagles on par 5's that were close to going in for a double eagle. Great discussion though, I hope to join the WGT club one day soon.