Yeah I agree. It has to take an exceptional smaller PG to even have a chance to carry his team. That player has to shoot extremely well off the dribble, but yet be an masterful ball-handler/passer. Basically has to be flawless offensively and have shooters on the wing who can defend, a PF who can defend and shoot/score, and a center who is athletic and can defend and be strong on the pick n roll. Plus, the bench has to be better than the other team's bench. All of this has to come true in order for a smaller PG to carry a team.
Right now, what the Bulls are missing is Rose being a complete offensive player and more shooters. Rose isn't a good passer, turns the ball over too much, and his offensive game is not no where close to being complete. Plus, they don't have enough shooters who can also defend. Their defense is strong, their bench is strong and they have a strong frontcourt. They just need Rose to improve a lot more and find more shooters. Its a very difficult formula which is why they're better off finding an All-Star wing scorer.