Yes. that's actually preaching to the choir since I'm a knife afi but what I actually mean is is there objectively, a proportionate increase in performance from a regular say $50 dollar knife to a midtech. Proportianal to the increase in price, I mean. I definitely get wanting a sebenza or a strider because I like knives and I am here at BF.
Proportional is subjective, but generally I'd say my enjoyment in general goes up as the quality of the product increases.
Good steel with a good heat treat and thought out design of blade and handle shape is always going to out-perform against lower quality steel with a basic heat treat. Less thought in design of blade shape, and handle shape affect performance too.
Ontario rat-1 in AUS8 for example. Overall, it's a nice enough knife. Basic design but works well. Cheap build. Heavy due to liners not being lightened, cheap plastic scales. Good clip. Good blade shape. AUS8 is easy to make screamingly sharp but I've found it to dull much faster than my s30v pm2. Way faster. Both are ffg, so it's not a geometry thing.
Overall, the pm2 is subatantially better than the rat1, however the casual knife user may never care enough to spend enough to buy 3-4 rat1 knives in order to get a pm2. The math is even worse if you considee the zt0452 I edc. Yet the 0452 i a far nicer knife in all ways than either.
So to answer your question.....yes, the improvements from the rat1 to the zt452 are objectively and subjectivey better. For me. And I think anyone who compares them would see that even if they didn't have any impetus to actually buy the nicer knives over the cheaper rat1.
My friends though, they've seen my 0452 and they wanted one (they claimed at least. But they'd never spend the $ because they don't care. The better stee (s35vn) means nothing to them, the Ti and CF liner while lighter...not worth the $. Sure it flips fast, but so does an assisted leek. The better mfg tolerances of the zt....they wouldn't notice it, even compared to stamped parts with rough edges. They wouldnt understand the concept behind the blade shape.
When the main metric is: "it cuts open my premade sandwich wrapper," they don't care.
But those little things....while not worth the $ individually, to me they work magically to make the use better, and satisfies my ocd and makes me happy.