I looked at the link you posted and if it is the one I checked out I did not see much of a detailed analysis to be honest. It was more of a summary of the content of PuckIq's data. On the surface it looks compelling as you stated but a more detailed look at these numbers was done by the guy who runs PuckIq here: (Thanks to tempesti2i for pointing this out).
https://oilersnerdalert.wordpress.com/2017/08/19/comparing-nuges-oranges-and-draisaitls-oranges/
He points out a significant quirk in these numbers which I had also noted before and that is the impact of the combination of Nuge and Russell on the numbers that Woodguy quotes. It's actually somewhat freaky and quite remarkable how much the pair seemed to be oil and water. I have pointed out that with Larsson statistically Nuge looks like a completely different player. In fact with anyone other than Russell and things do look very different.
Beyond that Nuge's numbers vs the elite in the west are also very different. I know you like the using GF/60 and GA/60 which I have issues with when comparing players in different roles. But what is striking is that vs the West Nuge's GF/60 is 2.2 nad his GA/60 is an extremely low 1.3. Yet vs the east they are respectively an anemic 0.70 and 2.70. The respective TOI are West 269 minutes and East 175 minutes so there is no doubt some small sample size issues here. But on the surface this suggests that the overall the numbers are skewed by some truly bad games vs a few eastern teams. And if I recall Nuge played some of the worst hockey of his career during an Eastern swing early in the year. So is this terrible stretch indicative of the player or is his much better performance over a larger sample size against the type of teams he is suppose to struggle against more representative of the player that his coach seems to speak of frequently. Hopefully this year makes this more clear.
http://puckiq.com/players/8476454