There is a difference, however....It's not nearly as much as the industry will have you believe. Take your 4k tv, sit at viewing distance, and put it on 1080. you can't tell a difference if the video you are watching is quality. Its only when you watch a ft or two away from the display. A quality 1080 display on a laptop/desktop, is quite good, sharp etc as a 4k display but scaling is different.
Just like processor speeds. YOY the new processor is a minor increase in speed unperceptable to normal workloads. It's only apparent during synthetic benchmarks. Like take the intel 14700 vs 265. about 2 seconds faster for the 265 doing a batch process of 500 images in lightroom. Other benchmarks the 14700 comes out on top.
Everyone is so caught up in manufacturer specs, marketing baloney, and benchmarks instead of seeing the real picture of it all. They are trying to milk money out of people every year claiming huge increases that are not there.
Take my current laptop. it's an 1165g7, it's quite comparable to the M1 macbook pro 13. performance wise it trades wins in REAL WORLD use, synthetic benchmarks are useless and does not provide real world results. It's shows what the processor / gpu is good at for that exact purpose. My battery life is 8-10 hrs and the Pro 13 is like 12-14. That's the only place where the M1 Pro 13 beats my system. Video editing, photo editing, etc they are so close it's seconds either way doing the same task.
Yesterday on Reddit, someone asked about a laptop and I responded that you have to carefully consider the CPU as the various families and companies have vastly difference performance, heat and battery life. This person wanted something without loud fans and was asking about a Core Ultra 1 system. I recommended Lunar Lake or Panther Lake. I could not get across the idea of efficiency, performance and thermals - this person kept going back to the Core Ultra 1 system. They finally asked me what I thought and I answered several hours later that I wouldn't buy it if thermals was one of their important issues.
Ideally you test to see what works best for you. But short of being able to borrow a lot of hardware or testing in stores, you have to go by benchmarks, articles, advice, etc. to at least get in the ballpark of a solution.
I've been posting about these investigations to see what works for me and you can see that it's time-consuming with the experiments with different hardware. For me, 4K at 14 inches is ideal. 3.2K or higher in a laptop works well. 2.8K which is getting more and more common doesn't work. But my situation is uncommon which is why the industry has been migrating to 2.8K.
There's no substitute for experimentation. But it can be costly and time-consuming and many don't have the skills to go through the process.