I wrote about comparison to Terraform here: https://docs.winglang.io/faq/differences-from-other-solution...
About the simulator, it is a functional simulator to be able to test and interact with the business logic of the application. There are other solutions, like LocalStack to simulate the non functional parts too.
I mean your comparison is weird, in one line you create a bucket what are the permissions exactly? Why is there no region?
Edit: after reading: "Generated automatically from intent", well it's a red flag for me.
Last question how actually the simluator works, is it one of those case where it try to emulate some high level concept but then your prod code break because the simulator was 40% accurate?