Very cool! Ignoring the relative strengths/weaknesses of the languages themselves, JavaScript's killer feature is that it is ubiquitous in web browsers and Lua

Very cool! Ignoring the relative strengths/weaknesses of the languages themselves, JavaScript's killer feature is that it is ubiquitous in web browsers and Lua's killer feature is that it has an extremely small and easy-to-embed implementation. With a project like this you could write code in Lua and get the best of both worlds. When it comes to actually comparing the languages though, Lua is the language that you'd get if you had 10 years to refine JavaScript's design and throw out the cruft, IMO.