I would say the DAC's in the comparison are very good DAC's, but not in the upper range. my CDP's DAC is better, and it's not even a fancy independent DAC but a DAC within the player.
there are lots of upgrades left for you to try Ed.
If you are of the opinion that distortions that change the sound in some way can sound "nice", then I can accept that some DAC's are "better" than the DAC1.
However, if we are interested in fidelity, objectively there is nothing better than a DAC1. Its performance is class-leading and it adds, nor takes away nothing from the source material. It does not have any sound of its own. This is explained by how it benchmarks. The distortion it adds is borderline unmeasureable and certainly inaudible. Therefore it merely presents the music as recorded.
Any other dac that sounds markedly different cannot be so and therefore to describe that as "better" is a debatable point I think.