Wait -- based on the graphic at that page, should we be taking away that TSMC's and Samsung's shipping 6nm chips have only a very slight transistors/mm^2 advant

Wait -- based on the graphic at that page, should we be taking away that TSMC's and Samsung's shipping 6nm chips have only a very slight transistors/mm^2 advantage over Intel's 10nm chips? And just as importantly, that "XXnm" is nothing more than a marketing tool?! Hyperbole aside, it's undeniable that TSMC's chips for Apple have a greater computing-power/watt than Intel's chips -- but is that all they bring to the table? I don't mean to disparage power efficiency, it's awesome. But the question stands.