The only thing that Vortex makes that is worth comparing to Nightforce products is their "Razor" line. However, that is their only product line that is intended to be on the same level as a Nightforce. Vortex also produces a number of less expensive scopes and those were never intended to be in the same level as Nightforce products.
So to answer your question, If you bought anything other than a Razor then any Nightforce scope is absolutely superior.
Out of curiosity, as I don't think I need more scopes and razor fits my needs quite nicely: in what way would e.g., Nightforce NXS (or is it NSX) be "absolutely superior" to say Viper PST 6-24x50 FFP? And in what applications? Does it track "absolutely" better?...
I personally tend to take such as overstatements.