Not even that. Those numbers just mean, "this 3D 2nm-ish process performs similar to a 2D 2nm process". It's the same situation as when AMD started putting num

Not even that. Those numbers just mean, "this 3D 2nm-ish process performs similar to a 2D 2nm process". It's the same situation as when AMD started putting numbers in their Athlon XP SKUs to tell "this CPU performs just as good as intel of that frequency". I, for one, think it makes sense. Because as I consumer I don't care about actual transited length or density, all I care about is: performance, efficiency, price. I can assume that going from TSMC N5 to TSMC N3 would result in an increase in efficiency and performance. People that do care about those things (i.e. electrical engineers) most likely don't use marketing materials...