I'd assume this is a sort of "would you rather" sort of question. I'm strongly in favor of Fallout. The Fallout series have really deep lore that you can find and piece together by just bumming around the wasteland. I like the direction their going with in 4, more story driven as opposed to 3. However, I do hope it does not take away from the quality of the sandbox experience and that your decisions still have an impact in the game. Destiny has become a decent game, but the story lacks coherency, good character development, and a clear plot/ end goal for your main character which takes away from the overall experience. They'll probably develop a coherent story, but not any time soon. Thus I am putting my Faith in Bethesda and Fallout 4 because I have seen the open worlds they craft and they, are, glorious! FALLOUT 4 HYPE!