Low resolution testing is meant to move bottlenecks away from the GPU. That's really all. I see folks saying they'd rather see results more in line with resolutions they'd play at, and that's fine, too. However, the lower resolution benchmarks are showing you the performance of the CPU in gaming. Which helps in forecasting gaming performance in the years coming on that CPU - as GPU performance increases, you will be able to see how the CPU keeps up (or doesn't) as compared to other CPUs.
Because some of us have moved to say 4k, already, there's usually no point in looking at these lower resolutions strictly as it relates to gaming your rig now, but rather how the CPU holds up in the future when the GPU power is stronger. At 4k, for a lot of people, the CPU isn't the bottle neck, which is why people in this thread are saying even with last gen or the gen before on Intel, you really don't need a CPU upgrade to game on 4k... the CPU isn't holding you back, yet. These lower res tests are showing how much growing room the CPU has as it relates to keeping up with the progressing increases in GPU power.