Despite what Walt said to Gus about Jesse, I think that Walt would ditch him in a heartbeat if he was pushed any harder than he was. He damn near said it himself : "Did you think I would just roll over and die?" and then goes on to say that if Gus kills Jesse, Gus losses Walt... bullshit. Walt knows that if he lets himself become useless to Gus, that he's dead, Jesse or no Jesse. We've also seen Walt's selfish nature in the past.
I agree with the idea that it's eventually gonna be Jesse vs Walt, and they're going to be contending for Gus's favor with the loser being dead weight (literally). Gus is going to play that angle since he saw (as was stated above) that Jesse's reaction to him calmly murdering Victor was so calm etc. Recall last season when Walt finally confessed to Jesse that his meth was "as good as mine". Couple that with Victor's monologue about a fixed recipe, and I think we have a very interesting season ahead of us full of suspicions and, very likely, betrayals.
The best part is that even if I'm wrong (as I have been in the past), speculating on this show is just so much fun. ^^
XI Wiki


