You can't compare the two because they're gaming mechanics and audience are different. Halo is a FPS masterpiece with great PvP multiplayer. However, it is its story that captivated me since I turned on the first Xbox. Destiny is more of an MMO, which requires constant interaction amongst users and teamwork to complete stories in the game. If anything I'd compare Destiny vs. Borderlands, or any other comparable game. Because for me, Halo blows all FPS's out of the water.