They are NOT the same. Pathfinder has raised roof rails, Infiniti has the integrated ones.
So if you're QX60 already has the roof rails (silver bumps that run front-to-back on the roof), then you'll need to buy the crossbars from Infiniti.
You can install them yourself. They come with the star wrench and screws so that part is easy. No need to pay labor to the dealer for installation.