You sure about that? In the alioth benchmarks, v8 wipes the floor with lua: http://benchmarksgame.alioth.debian.org/u64q/compare.php?lan...
"If you're interested in something not shown on the benchmarks game website then please take the program source code and the measurement scripts and publish your own measurements."
Like this guy did -- https://pybenchmarks.org/u64q/which-programs-are-fastest.php