OMG. I thought the first part with the serial killer case was great (Sherlock clearly loves his killers the same way the Doctor loves monsters), and then I got to the part with the chase game and it was brilliant.

I'm glad it remains a secret who won - as soon I read the bit where they make the bet, I went "But! Oh noes! I love them both so much, I can't stand seeing either one of them lose!"

...on the other hand, sulky!Sherlock is always an adorable thing, so maybe I do want to see him lose sometimes, after all. ;)