I agree, the article looks weird.
It claims that difference between 100W and 130W consumption should matter little in game. And i agree. But then the article discusses this consumption at lengths.
However what might matter is noise during game.
It may matter if other family members object my gaming because computer then generates unpleasant noises.
The article does not mention it. Different card models might have different coolers, and it is now directly and generically applicable to the chip itself? Maybe, but power consumption also is dependent upon vendor and model. Voltage, factory AC, RAM chips, power lines made of lego of different efficiency components. Still, it is discussed.
Another thing that may matter is cool and silence OUT of the games. Say, if out of 24 hours of day my computer spends 1 hour gaming, 3 hours WWW surfing and generic "office work", and rest 20 hours it is "downloading torrents" and providing music and movies files to other devices in my family with no person sitting at desk - then i would argue the comfort and efficiency of non-gaming modes became even more important than gaming peak performance. However this was not mentioned at all.