I still think they should beat the Bulls, but boy are they in a series. Without KG, the Celtics no longer have enough interior D to corral guys when they frequently get by their man. That is forcing them to drop off their man a little more, and that means a jumpshooting team like the Bulls is getting a lot better looks at the basket.
On the other side of the coin, the Bulls can't defend the Celtics either, because they can't keep them off the offensive glass (they had 16 more shots in game 2) and they can't stop Rondo. If the Celtics make the right adjustments, Allen and Pierce should get a lot more open looks as well.
So basically this series is going to be a shootout. Number one, Ray Allen has to play better D on Gordon. If the Celtics can't do a better job of forcing Gordon towards the help defence with Ray on him, they might have to try Tony Allen, and go small with Ray v Salmons at the 3 and Pierce at the 4.
Number two, the Celtics guards have to be in position to defend the fast break, or Rose will have another night out.
Number three, Celtics bigs have to stop the stupid moving pick and pushing fouls. Bulls only stayed in game two because of foul shots and Ben Gordon's 3 point shooting.
As far as the championship goes, the Celtics have been done since KG was shut down for the second time. But as a Celtics fan, I'm still enjoying this series with the Bulls. Game two was an absolute cracker, with the Bulls taking some big shots from the Celtics and punching back, before Ray managed to win a classic shootout with Gordon at the end. Who could ask for more?