San Francisco vs. Berlin?

What do you think? Is the whole discussion about co-existence, confrontation or reorientation?

See this post: http://www.6wunderkinder.com/blog/2011/08/09/founders-stand-up-the-anti-copycat-revolution-starts-now/

How about a "twin start" for startups, launching equally 50% of a team in SF and Berlin. Working 24h, soaking up the best of every world and using local networks.