Personally, if you are brave enough to go with Warner to stay alive and playing for the entire game, he is the play this week against the poor Lions pass defense. Good matchups for the Cardinal wideouts who are top notch, and Warner can certainly get the ball to them if protected at all.
I think he's good for 30-40 yards more than Bulger in this spot, with Cutler a distant third selection against a solid Chiefs defense which has a nice pass rush. I think Warner is a better bet to get more than 2 passing TDs, which both should be expected to get.
Bulger is a good option this weekend, too, probably not much separation or problem with going that way. He has nagging injury concerns, too, tho.