Does Nissan know something Porsche doesn't?

Nissan announced it will not move forward with the GT-R powered 4-door flagship model.

http://blogs.edmunds.com/straightline/2009/04/2009-new-york-auto-show-infiniti-news----gt-r-powered-flagship-is-dead.html while Porsche, Lamborghini and Aston Martin moved forward with theirs.

I find this interesting for several reasons. First, doesn't this reinforce the notion that the GT-R should have been marketed and sold as an Infiniti? After all, how many other $82,000 cars are there in Nissan dealerships? That was a mistake in my opinion. The level of service and atmosphere, in my experience of calling on over 200 dealerships of all makes, is incomparable.

Also, Porsche has moved forward with the Panamera sedan and it arrives shortly. Granted the timing doesn't seem great, but Porsche is the most profitable car company per model at a whopping $28,000 per car sold. http://www.mobilemag.com/content/100/354/C11441/ No wonder they have a controlling interest in Volkswagen, the 3rd largest car company in the world. So I think they know what they are doing, and it shows low volume sales can be profitable with a high price.

Nissan would have much of the R&D worked out already, having the GT-R platform to expand on, especially the powertrain. The GT-R couple is already a large platform, my guess is it could be shared. Very similar to the Challenger (also an overweight 2-door) and the Charger. It would obviously carry a $100,000 price tag, especially badged as an Infiniti. I think this is a missed opportunity. They benchmarked Porsche once, can't they do it again?

Notice how closely the Infiniti looks like the Panamera? Is Nissan conceding defeat to Porsche this time?