That's fine, but people rarely are going to buy those standarized components, instead they will review cpu and gpu and be able to choise silent or not hardware. My point humblely was that unless you review a superspecialized and advertised as 'guaranteed silent' case, it is not a huge factor, is it?
You don't seem to understand how and why standardised testing works.
It isn't done so that users can go and buy the exact same components and achieve the same results. It is done to reduce the variables in your test, to the point that the only variable is the component you are intentionally changing.
Sure, two different 8700Ks will produce different amounts of heat. But if you're only testing one 8700K, and it's 3C cooler in one case versus another when nothing else changed, you know the case is responsible for a 3C delta, rather than the CPU being 3C hotter than...itself.
It is POSSIBLE for a user to use hardware that would exhibit different fundamental behaviour to your test rig, but in practice, a case with solid airflow, sufficient to provide better performance when using a tower style air cooler and an open-face videocard, will almost always *also* perform better when those components are changed for, say, an AIO and/or blower style videocard. The reason is that for the most part, all any cooling component relies on in order to do it's job, is effective and continuous circulation of cooler air from outside of the case, and then to effectively exhaust the air instead of recirculating it.
As long as that job is done properly, it really doesn't matter much what your test rig is or whether someone else has exactly the same thing - As long as you're not setting up a test rig with fans blowing backwards into other fans or something ridiculous like that, all you are essentially testing is the ability of the case to intake and exhaust air.
You could test a case using a NoFan CR95 and a FTW3 1080Ti if you wanted. Or you could test the same case with an NH-D15 and a blower-style Vega 64. Ultimately, if you compared a terribly designed case (BitFenix Enso) to a well designed case (Define R6) with either of those options as your test rig - You would see the well designed case cool far more effectively.
Also, in actual testing (like Gamers Nexus does), it's often the case that silence focused case designs are actually LOUDER than airflow-focused case designs in practice - because the silence focused cases restrict airflow so much that the fans end up spinning faster to provide adequate cooling.
Finally - even in cases where this testing is done, if a result is anomalous, it is the job of the reviewer, presumably not being an idiot, to look at the case and identify why the result is anomalous. For case reviews this is typically not difficult to figure out and then explain. Again, Gamers Nexus does it all the time.
