Reflection in the C++ version is as bad or worse given that you can't mess around with it in a REPL to figure out how it really works. And the C++ version has

Reflection in the C++ version is as bad or worse given that you can't mess around with it in a REPL to figure out how it really works. And the C++ version has most of the namespacing issues (e.g. any field starting with "set_" has potential to clash with another field). Both implementations are equally bad, despite that they seem to have been written by two separate teams that didn't communicate with each other.