Starting five, yeah the Pistons have no doubt the deepest starters. One through five they are good. I don't know if they have the best starters because they don't really have one superstar so it's hard to gauge.
But bench? No way in they have the second best bench in the NBA. That's laughable. Their bench in the playoffs was basically Stuckey and Maxiell. A little bit of Ratliff and Hunter but that's about it. How could you consider that the second best bench in the NBA?
If you want to say their bench has a lot of potential, that's fine. But in actual play, they didn't produce too much in the playoffs.