Ahh here's my third attempt to write a good response. Anyway I should let you know that screenshots don't show anything in terms of uniformity issues. They are just a profiled drawing of what is being fed to the screen. A photo would be more helpful.
I could go on forever about differences in calibration and display types and pretty much everything else off topic. I keep doing so and deleting it, as it drifts away from being helpful. They aren't as consistent as I would like, but I suspect there's a reason you need a notebook. In my opinion you can get much better displays from desktop types if you buy the right one. Calibration is always a bit awkward, because it relies on a very old method where the sensor builds a rough idea of the response and gamut of the display and generates a profile that makes corrections pre-framebuffer and supplies a description to color managed applications (most of them these days). The only advice I can offer there for your notebook is allow 30-45 minutes of warmup time, make sure it's plugged in at the wall, disable graphics switching just in case, and disable any power savings functions. I would start with native on gamma and color temp and take note of its final reading. If it's close to D65 gamma 2.2, stick with native. In terms of accuracy, a good rmbp display has a gamut similar to sRGB. You can't really change that. If you can get to that point and it's uniform, that is a good unit. Other threads suggest it really is a lottery though.
Anyway in the end if it was me, I would exchange if I wasn't happy with it. I merely point out that the variation is in the nature of the product.