There is some more info on the GTS here
http://www.themotorreport.com.au/#/56530/2014-hsv-gts-gen-f-holden-special-vehicles-revealed

See how a Nurburgring lap time of 7m 41s compares with other cars
http://en.m.wikipedia.org/wiki/List_of_N%C3%BCrburgring_Nordschleife_lap_times

This beast with the right driver is right up the Nissan GTR or Porche 911 alley.
One car to take seriously is also the Dodge Viper. Holy crap, for an overweight American V10 that thing makes others eat dust and rubber pieces.

Nurburgring is a great track to separate the men from the boys.

How do you come to that conclusion ?

I see the Nissan GTR with a time of 7-24, in semi-wet conditions. Quite a bit away from the 7-41.