It is not reported often by the manufacturer, but SSI and TLCI numbers can be a better metric if available. They are used by the Broadcast/Photography community to match the spectrum's similarity to Sunlight.
Sorry if I'm missing something important as I have experience with C++ but not rust, but is async/await the right abstraction in Rust vs. the underlying generators which I assume is lower level and closer to C++20 Co-routines in terms of performance ? [1]
In other words, it seems Rust co-routines at the level of Tokio are not as performant as C++ native Co-routines [2] and further down the thread, it's mentioned that once generators are stabilized, it might help build lower cost and performant stackless coroutines in Rust.[3]