He’s not Benedict Cumberbatch
Contrary to popular belief Michael Fassbender and Benedict Cumberbatch are not the same person. Yes, they’re both Tumblr darlings, have each channeled Shakespeare and appeared as blockbuster super villains, but they do also appear in 12 Years a Slave together. That said we could implore that Fassbender created the alter acting ego Tom Hiddleston so that he could appear in more films. Have you ever seen them in the same room at the same time?