From a casual glance, luafun tries to compose with iterators as much as possible. It looks like Moses is largely table based, which might be more memory intens

From a casual glance, luafun tries to compose with iterators as much as possible. It looks like Moses is largely table based, which might be more memory intensive. Also, luafun was designed around optimizations offered in LuaJIT. I doubt the same is true of Moses.