I'm still learning about Cinder, but my initial impression is that there are many similar techniques used, and maybe one interesting difference is that with Pys

I'm still learning about Cinder, but my initial impression is that there are many similar techniques used, and maybe one interesting difference is that with Pyston we've focused more on out-of-the-box performance while Cinder has had an opportunity to co-optimize the runtime with a particular codebase and presumably gets better results if you're able to do that.