Back in the day, factory tool-rooms or auto parts/hardware stores didn't stock 4 different brands of everything, so people just used "whatever" and if it broke or wore out, they just replaced it with probably the same brand and moved on with life.
Seems like it was the Internet that got people obsessed with brands/brand loyalty and comparison testing is like crack, it seems.
if some you tube tester determines "Product "A" performed much better than product "B"", those that are fans of "product A" will cheer and feel good, while those that really like "product B" will think the test is maybe bogus.
We all know it's true.
Even “back in the day” people had preferences about the tools they used.
Ergonomics can be determined somewhat quickly, but it’s also sort of personal to hand size, etc. so this might vary by person.
Tools wearing out quickly, breaking, slipping on bolts or in screws, etc. is highly noticeable, and if it happened frequently enough, whoever was in charge of sourcing tools would likely get told about the issues, probably repeatedly, and also have to keep replacing the tools.
A 5% increase or decrease in tool life would likely not be overly noticeable, and might even be within the margin of variance as far as the tool durability might go.
Over time though, the tools that lasted longer or worked better would still be hanging around after the failed tools had been tossed in the scrap bin, so it would start to become apparent who might make the better more durable tools.
If the tools are supplied by an employer though, then that usually decides what tools are used.
As for hex keys, I’ve used various brands, including some of the Bondhus fold up sets with the matte black ProGuard finish, for plumbing work, and put those fold up sets away wet, in a humid area, and not gotten rust, and this is one of the reasons I like the Bondhus keys, and tend to go with the brand.
The keys also fit perfectly, even in old work set screws, and I never had cam out issues.
The body of the fold up sets is plastic, but I find the shape way more ergonomic than traditional folded metal body fold up sets, and the cast metal bodied one I have from I forget who, and the overly engineered Wiha set I have.
The only Bondhus key I have broken is a ball tip screwdriver, in a small size, that was made before the ProGuard finish was used, so I have no clue how old the screwdriver was, or whether it even used the current steel alloy Bondhus now uses. (The “Protanium” steel alloy).