Try running something OOPy instead of a tight loopy code, e.g. DeltaBlue, you will discover that LuaJIT has weaknesses too. Though I must admit V8 could handle

Try running something OOPy instead of a tight loopy code, e.g. DeltaBlue, you will discover that LuaJIT has weaknesses too. Though I must admit V8 could handle dictionaries a bit better - but at the moment it does not.