It's not about how one looks, BC has started something of a habit of playing real people lol. BC for the win.
On a serious note though, Emile Hirsch definitely looks the part.
You've got to look a little bit like the person you're meant to be playing. I've not really seen Cumberbatch in much. Only a few of his small parts.
Not a fan of Sherlock?
I've seen a few episodes of Sherlock myself and thought that it was alright. BC has been everywhere since starting Sherlock.
Sherlock the series is pretty good, but I don't think it is as good as all the hype. I think ratings on IMDB had it in the top 5 shows of all time...I don't think so...
I agree that it's nowhere near the top 5 of all time. I always felt like IMDB was inflated when it came to TV shows.