He's not even close, Watson even accused him of being Spock in Baskerville. But it was surreal having him face Spock after that.
Then again, Spock wasn't himself either, so if extrapolated the change in Spock throughout STID on Sherlock, you'd probably get something close to what we got.
He looked like a dragon to me!
Kirk vs. Smaug... Who would win?