Berlin is organic (as is London); that's why they have a decent shot. Berlin has some issues (mainly, a lack of great local investors; I'd love to run some money there on the side). It has the other elements (top universities, attractive to immigrants, especially from EU, stellar local talent (although maybe more "projecty" vs. "company-y"). CCC alone is worth about as much as UC Berkeley in the Bay Area.
I'm going to be sad if I'm not living in Berlin at least 50% time by the end of the year.
This is hugely important. So many places have tried to copy Silicon Valley, but it's just not very easy to artificially put everything together.
The "dark horse" for SEA is Myanmar; assuming the elections go well in 2014/2015, I could see them turning into a great place with essentially greenfield infrastructure investments over the next 5-10y.