Barrosinc I'm guessing you're referring to Brian's maple yes? In my experience both have worked well for me and conversely both have failed on me as well. This is all part of the game I suppose. When I was in Japan last summer, I saw in Mr. Urushibata's nursery a few failed grafts. It goes to show that it will happen even to the very best of us!
BTW here is an update of this maple.
I am letting the second trunk graft to continue growing and developing. I was very happy to see that the lower most branch became very vigorous this year as you see in the pic below.