Personally, Matze, I think he had a lucky escape (or made a wise decision in avoiding it).
The Downey Jr/law film is a fun adventure film if you don't take it seriously, but Downey's character bears so little resemblance to what I think of as Sherlock Holmes that his detective might as well have gone by a different name.
The first Cumberbatch and Co series had 3 episodes - I was disappointed by the 2nd of those episodes, but enjoyed the others. They are making a further 3 that take on some of the best known stories (apparently Adler, Hound and Reichenbach).