They may have to do this to polish the PC version, who knows. But one thing is certain: UBI knows that if the PC version comes out before the console version, they would have a much more critical and negative bunch of gamers to appease first (even moreso since the GR2 disaster).
Think about it! How long have PC gamers been waiting for the next Ghost Recon? The general PC gamer concensous is: "It had better be good, 'cause after WE put the GR series on the damn map, you pushed us aside in favor of the quick sales of the console market."
Also jaded PC gamers/reviewers will take a game down a notch anyway, as they are usually the ones to speak up. With the consoles, you can always sell to a sucker.
If the consoles were sent to stores after the PC game came out in this scenario, they could lose potential money in the console market based on the (potentially) bad PC game's reception. It's way too risky for them to push the PC game out first. Better to sell the game to the console gaming herd early...
Another clue: Look at Rainbow Six: Lockdown for the PC right now. They totally delayed the game for the PC. It pissed PC gamers off. The game came out and it is getting lack luster reviews throughout the community. They know the strategy they need to take in order to clean up properly. Needless to say, since they didn't cater to the PC community first, the Rainbow Series is probably going to only exist on consoles from this point forward.
To be honest, I think that when GR3 comes out, it will be the last nail in the coffin for UBI publishing these titles to the PC. I don't think that people will say GR3 will be an exceptional game for the PC. I think people will say (now that it's coming out later) that it is just another console port with extra bells n' whistles, or that the game is so far removed from the Original GR that it doesn't hold up to its lineage.
I totally hope I'm wrong.
This comment was edited on Feb 28, 13:58.