Re: "Merging of Brands"?
Vin is Thanos, at least the voice of CGI Thanos.
Marvel makes the Infinity Gauntlet and to be more comic accurate, they make a deal with Sony and Fox that would allow them to use the characters from the comics in the movie. Spiderman and the X-Men to be specific.
The Heavens will run red with blood. But in the end, as always, Thanos will stand triumphant.