The QV I'd guess is the 500 HP one?
Looking at the base, Car and Driver had 2018 model go 5.4 sec to 60. Base 43K, as tested price 55K.
Still not a difference in either metric to sneeze at, but more realistic comparo.
1.2 seconds is a huge amount. At 60 mph you'd travel 88 feet in 1 second. Again, not a small amount. And keep in mind, I was asking about used for the price of new CX-5, so that 2018 Stelvios thousands thousands under a new Signature. But, I couldn't see owning it 5 years from now.