Yes, consolitis. Because the 360 doesn't have multiple cores, can't handle real time streaming of data, doesn't use the CPU to prepare data for the GPU and has never had one of its cores used exclusively for physics in a game.
Oh...wait, none of that is true.
The main thing Alan Wake suffered from was a turbulent development
which saw their original design for an open world game changed to a more linear experience. If you had played the game, which I can only assume you haven't after the above comment since everything shown in the above video actually made it into the released game, you'd know that an open world game wouldn't have really suited it. Sure you could have opened up some free form travelling between key areas but in terms of creating the type of experience they were looking for, it would have been largely redundant.
If you want to really talk about consolitis, you could mention the fact that the game runs at a sub-HD resolution, the fact that their lighting solution doesn't work well indoors and the fact it runs at 30fps. None of these really affect the enjoyment of the game though.
All that being said, despite having played through the game and its DLC on the 360, I'll definitely pick it up on the PC for a second playthrough. ****ing love Remedy and hopefully the increased sales for the PC version will do them some good.