I was wondering if anyone would approach this topic from the mechanical side of it. For example, don't Lambos have to replace their clutch after 15,000 miles or so? (I don't know the average, just throwing a number out there). Contrasting that, does the Viper have any mechanical parts needing replaced at a mileage point, or can it go 100K miles with just oil and fluid servicing. If so, the viper wins in this category.
The first year 04 Gallardo's had weak clutches, many were replaced under warranty and many failed in less than 5K miles.
That was rectified in the '05's and beyond with physical and software updates.
The Gallardo's from 2005-2008 (pre LP) have decent clutches under normal driving conditions many have seen 25k+ or more miles.
Which is a lifetime on a car driven on weekends.
The 2009 and up have greatly improved egear clutches and they are not even an issue.
It's completely dependant on how they are driven. Stop and go traffic or hard launches will effect longevity.
My 2008 had 4K miles on it when purchased and showed 95% clutch life left.
My first Viper was a 1998 GTS I bought with 9K miles on it. It needed a new clutch at 10K miles on it.
Previous owner trashed it, along with the tranny which I also had to have rebuilt. Chuck Tator did the work.
So it all depends on how the are driven.