Spurs were in the NBA ten fewer years, and have two fewer les. It's a whole lot more likely the Spurs win two more in the next ten years, so that makes it kind of a wash. The Spurs have been consistently better, while the Bulls were frighteningly good for a short stretch, so again you could consider that a wash. It's a good debate because there's not really a clear winner between the two. As a Spurs fan for 20 years, it's just nice to be in the conversation. I can remember a time where a topic like this would be a joke to even bring up.