I mostly agree with you but there's a touch of real world value here... I mean, once you start adding code to 'hello world' it's not going to get faster. So, if you have an app with some stringent perf requirements, this would tell you if you can even really start with any of these frameworks.

For that same reason, I think metrics on how much RAM they settle in at would also be interesting. They could disqualify some frameworks from RAM-constrained requirements right away (ex. if you're building some hardware with an embedded-but-sophisticated web ui).