The PS4 had just launched, new owners are hungry for games.

Now you're just coming up with excuses. By your logic Most Wanted U didn't sell due to it coming out months after it's initial release on 360/PS3, so Injustice should'nt have sold on the PS4 due to it being available on other consoles for months. Wii U has a bigger install base than PS4/X1, yet 3rd party games sell higher on PS4/X1, not just "hardcore" games like ACIV or COD, but family games like LEGO Marvel, too. Just Dance and Sylanders are selling higher on the WiiU than PS4/X1, but not by much.

Attach rates are always inflated in the first two months or so fater launch.

So then why didn't Darksiders 2 and Tekken Tag Tournament 2 sell well? Nothing is wrong with those WiiU versions and are actually superior to their PS3/360 counterpart due to Darksiders having the DLC on the disc and Tekken having mushroom mode & Nintendo character skins. Darksiders should've sold well on the WiiU, cause that's where the Zelda audience is at, and Darksiders is basically a Zelda game, but with different characters and a better combat. Nintendo also released a non-broken version of Ninja Gaiden 3 and it still didn't sell well. The attach rates should've been high like you said, yet those games didn't sell

Exactly my opinion. Show, not tell.

It remains to be seen until the games released to be honest, but I'm not holding my breath for any version until reviews are in and I've played it myself, I've always found it a bad sign when driving games focus on the visuals too much, which is why I'm hoping the drive club delays are about gameplay and not friggin lighting.

Nnija Gaiden 3 is still a shit game and the other two are hardly big name acts.

But they still should have sold well, especially with those incentives

Not really much of an incentive, but since we've drifted way off the topic of Project CARS, I'm gonna leave this line of thought here.

Lets hope they make their money back otherwise they'll never do anything on the Wii U again.