Gandalf Vs. Dumbledore

I've been wondering recently What If.... Gandalf and Dumbledore had a Contest to find out who was the Greatest Wizard of them all. Personally I think it would be a pretty close and even Contest between these two great Wizards, however if I was to put some $$$$$ on the Contest I think I would have to bet on Gandalf to beat Dumbledore. Don't get me wrong Dumbledore is a great Wizard in his own right I just think that Gandalf could take him in this kind of a Contest.

Beatles1964