
1991-98 was one of the least competitive eras in league history. The rest of the east sucked and the western conference champion was always clearly food for the bulls.
If it were competitive, then they would have met another team that was actually great on multiple occasions and lost to them at some point. The showtime lakers, the bad boys, Bird's Celtics, and Julius Erving and the 76ers all faced each other multiple times in the playoffs and won titles at the expense of each other. At the end of that era, the bulls and pistons met 4 years straight in the playoffs, with Detroit winning three times before the bulls eventually dethroned them. The Shaq and Kobe Lakers met Tim Duncan and the spurs 5 times between the 1999-2004 playoffs, with it going just 3-2 in the lakers favor. The KG/Pierce/Allen Celtics faced the lakers twice, with each team winning a title. The heat faced the spurs twice with each team winning a title. The cavaliers and warriors have both clinched a title on the other team's floor. That's what competition looks like. If your opponents are great and you face them multiple times in the playoffs while each team is near or at it's apex, history shows that neither team will come out with an unblemished record.