Not at all, the just a Nissan tag is quickly dying out with report after report showering the GT-R with more praise than Nissan could have ever envisioned. To add to Porsche's worries, both cars have now been put on a dyno to find out, once and for all, which has more power and torque.
Nissan's official figures put the car at 353kW or about 473bhp (or 480hp depending on which measurement you use for horsepower) and 588Nm of torque. The 911, unsurprisingly, has the exact same power output but comes in at 620Nm. It is also roughly 90kg lighter.
The confusing thing about the figures is that despite weighing more and having less torque, the GT-R accelerates from 0-100km/h quicker than the Porsche (3.5 vs 3.9)!
Our friends in America decided to find out why. The results show a near identical power and torque output at the wheels! We can assume then, that the GT-R's faster acceleration is either due to a better drivetrain and transmission, or because someone in Nissan has sold their soul to the devil.
On the actual dyno the GT-R measured 406hp (6,400rpm) and 560Nm of torque (3,800rpm), now remember these figures are at-the-wheel, meaning you have to account for energy lost through the drivetrain.
Using the same dyno, under the same testing conditions, a 997 Porsche 911 Turbo matched the GT-R almost identically, unfortunately for Porsche the extra 32Nm of torque did not eventuate (however as you can see, there is noticeably more torque in the lower revs for the German).
The end result? The 911 Tubro's throne as the world's best usable-supercar is starting to look a little less secure. To be fair, the current model 911 has been around for about 2 years and you can bet your house the next-generation (998) Porsche 911 Turbo will be hitting back at the GT-R - and hitting hard.
For more info and graphs check out Edmunds.