Looks interesting, but raises some questions: 1. What is "blazingly fast"? 2. Is it just WebGL rendering that is "fast" or e.g. physics is also "fast"? 3. Wh

Looks interesting, but raises some questions: 1. What is "blazingly fast"? 2. Is it just WebGL rendering that is "fast" or e.g. physics is also "fast"? 3. Which target platforms are practically supported today?