If it works, it works, no stopping it. It's not really selling out either, it's fun little ad that shows how brave and chill the Guardians are, despite their horrific situations. You're looking at the ad from one side, you want specific gameplay in ads, you want them to show what the game is. That's fine, but that's what gameplay trailers are for. TV adverts are to say "Hey look, this exists." Which will get people looking further into the product. You just don't like the game...that's fine. But there's no reason to hate on the ads for it also. Here's an even better, really simple solution: "Don't like the ad...don't watch it."