Nitrogen and argon are just gases that they fill the binoculars with. The main purpose is to keep water vapor out and seal the binoculars. I am not aware of any optical qualities of the gases that would improve the view.
Best to compare the two based on optics, forget the gases. The glass is the main thing.
Both fine binoculars and, as ET says, forget the gas - not a factor. I'd give a slight edge to the Vortex for optics, but I like the mechanical construction on the Pinnacles. Well made bino. _________________ Thanks for posting with us
Joanie K - Your personal optics expert