In the context of the issues it's probably fine. It's the fact that this is the only image from inside the issues we have that's the problem. The marketing calls the story a 'classic hero's journey,' says Illyana will be 'shattered,' the title is direct reference to an ancient Greek myth, the covers are badass, epic, and keep the theme of 'shattering.' This picture does not convey any of that. This is the moment when the marketing should be be starting to kick into high gear, and the number of people who are more likely to pick up the story because they saw this image is 0. In fact it may turn prospective readers off. From a marketing standpoint this was such a horrible choice. Since we don't have any context or any other images it's impossible to say if it was the worst choice, but it's hard to picture any images being worse to show off in that video.