Yeah Billups isn't the 2nd best pg.
But on to the topic at hand. I think the Pistons are still better than the Bulls. And thats not going to change unless some of those Bulls really improve. They're probably going to be worse offensively or at the least not improve at all.
The Pistons will still be a top defense and Sheed I think is a better all around defender anyways (just my opinion that I've stated for like 2 years).
They'll be pretty close all season, but the Pistons will win out the division, and McDyess will only help their offense in the starting lineup and he can defend.