I initially thought that the PC version would come after the X1/PS4, but I've changed my mind on that after reading about the expected sales figures of the new consoles. I think Sony (possibly MS too) are estimating 1.5 million consoles by end of 2013 and 4m by April 2014. Taking these figures at face value the PC version would surely offer greater profits.
I mean most of the folks who have a current console are not going to buy the same game. Sure some will, but not a high amount. They might feel like that at the moment, but the hype of the game will surely die off and folks will move onto other things. I believe it's mainly PC gamers who are licking the lips at picking up this game and the PC version will come first, or like you say the same time.
Also for the next gen console version it might sell via trade in, where as the PC version at £40 will be all profit.