Yeah I really don't think the NZ talent is other worldly like it has been for most of the time I have watched rugby in my life. Over that series Savea, Smith and Jordan were the only real standouts as players better than we have available. In reverse Sheehan, Furlong, Beirne, Henshaw and Keenan* all looked better than anyone NZ have. Add in that POM, VdF and Sexton looked far more able to influence test matches in their favour than their opposite numbers currently are.
NZ are a top 4 squad right now and are definitely capable of beating anyone on their day (a suffix that they haven't needed in decades) but their current talent level has then in a position where good coaching, good form and a bit of luck is needed to be the top team in the world, the same as South Africa, France and now Ireland have had in the past three years. They also need a fix in their tight five, particularly props from my viewing.
*Willing to accept I may be missing something with J Barrett but I've never massively rated him. Keenan was definitely the 15 of this series anyway.