My most charitable interpretation is that OP is suggesting that Sherlock Holmes is an alternate universe Doctor Strange, thus already covered by the Doctor Strange image.
Actually, after reading it a few more times, now I think they meant that all roles are included, not just those in the image (which seemed obvious to me, but maybe they wanted to err on the side of overexplaining).
On the subject of Sherlock vs Khan, though Sherlock may be the better strategist, Khan is more familiar with advanced tech, a better fighter, more durable and better at manipulating others. Khan would not struggle to crush any of Sherlock's enemies.