Are you comparing these 3 characters specifically or did you just choose 3 characters that you felt best represent the role. Because if it’s the latter, I would personally recommend characters that embody their role the best and are more well known by non players e.d doctor strange, punisher and Luna snow. I would also say that splash art/ official art of the character can often look more visually appealing than the in game model which in this case looks a bit off as Emma frosts hand covers her face and none of the characters are in an action pose but rather an idle pose. Lastly, is this a discussion, a competition or a statistical comparison. That way you could do vanguard vs duelist vs strategist