I think I have a similar reaction to you, but maybe with a bit of a different spin. For me, it's not so much that I want to see a literal side-by-side of something non-trivial (though that would be nice, too).
I personally want to see a non-marketing-bullshit statement of why other languages suck and why the author(s) feel that this new language doesn't (at least for some given domain or style). I obviously don't want the statement to be insulting or anything, but give me something real. Every new language claims to be "safe, ergonomic, performant, easy-to-learn, beautiful, scalable, cloud-integrated, AI-powered, "heart" open source, etc." I want a language that says, "Hey, other languages get X wrong and we don't. If you don't like it, that's great- go back to those other languages." where "X" could be error handling, performance, type systems, whatever.
I personally want to see a non-marketing-bullshit statement of why other languages suck and why the author(s) feel that this new language doesn't (at least for some given domain or style). I obviously don't want the statement to be insulting or anything, but give me something real. Every new language claims to be "safe, ergonomic, performant, easy-to-learn, beautiful, scalable, cloud-integrated, AI-powered, "heart" open source, etc." I want a language that says, "Hey, other languages get X wrong and we don't. If you don't like it, that's great- go back to those other languages." where "X" could be error handling, performance, type systems, whatever.