Just because the one metric to you is important doesn't mean the screen is suddenly lackluster. Perhaps more people find it important to have the higher PPI for reading?
I love myself a good car analogy. Take a sports car that has the fastest 0-60 time, fastest 1/4 mile, best braking, best lap time, and yet has a 3rd place lateral g measurement. Does that make it not a great sports car?
Hardware wise is probably the fastest thing out there. Display size/Package size ratio is unequaled. And it's display quality is maybe 2nd or 3rd best out of flagship phones (and 99% better than most every other phone out there).
Now tell me that unimpressive.![]()
PPI is worthless. We all know that. Resolution is also not that important, unless in a peeing contest. Moto X proved that Apple (conservative) way is just fine in this day and age.
For an average person, i would bet that brightness (aka readability outside) is far more important than PPI and resolution...and since all screens nowadays are very pixel-densed (above 320PPI), i would go even further to say that brightness is the MOST important feature of a display. 2nd? Color accuracy. Everything else is of little importance to me (and most folks).
So, although the article tries to be neutral and fair, you have to see thru it and get what is MOST IMPORTANT to you...or in this case, me (and probably most avg folks). I learn this the hard way with my Note 2.
Your car analogy does not work. If you know cars, then you know that a car can't be all #1s in those categories and suck at lateral g. They are all inter-related. Not so with a phone display! Phone display stands out as an independent factor in a phone experience. Software can correct color accuracy to "some" degree, but brightness is not correctable with aftersale software updates...at least, none that i know of recently.
Most folks and I don't care about LG Viper or those other 99% phones that you buy at Walmart for pre-paid services. What i care about is how G2 compares with its peers, its competitors, and its class. Remember, by the time that G2 comes out, its internals are no better than its modern peers. Its camera is great among Android (for now), but may not be much better (if at all) than iP 5S.
Impressive? Yes. But, a disappointing display is a disappointing display. Notice that not one review/preview said that G2 display was class-leading. Not one. Until i can get my hands on it, i find this a bit disappointing. Remember, LG introduced this display as being the latest and greatest among ALL screens.

Like i said above, display brightness is a MAJOR point for me due to what i use my phone for.