Winner: 911 GTS - the King is still the undisputed King that cannot be matched. Bascially Mercedes' very best and Jag's very best against a mid tier 911 and the 911 trumps them with ease. And to think the 991 is 5 model years old and still cant be matched by the new cars being released and made just to compete with a 911. Turbo or Turbo S would have just made the beating worse.
http://www.caranddriver.com/comparis...omparison-test
"It (911) has the most grip here and the most proficiency going around corners"
"The
Porsche’s engine, though lacking firepower here, is still a
masterpiece"
"this (911) is still the
best-driving high-end sports car extant. "
On another note, that AMG GT S is as fast in trap speed as a 991 GT3, though still would be looking at tailights of a turbo or turbo S as seen in comparos.