Destiny is the biggest launch title ever

[The Joker]

I am convinced most of the sales are from the US, where Halo was larger than sex. With a legacy like Halo behind your name, the Murricans will eat anything you give them, thrice over.

The game looked interesting enough at one point, kinda Borderlands-ish, but with more players. I guess I'll give it a spin one day, but for now I've got more than enough games that need completing.

This is why the game sold well.
Halo has an insanely large following all over the world, and Bungie (Creator of Halo) is behind Destiny.
I knew from the get go the game would do well purely on that basis, from what I've played its pretty good but nothing groundbreaking, it plays and feels a lot like borderlands.