No one diminishes the Bulls and Jordan because they didn’t have to beat Kareem, Magic, Worthy Lakers. Or the Bird, McHale, Parrish Celtics. For a few years, they couldn’t get past Detroit.
I don’t recall the East being that strong in that period, either.
They dealt with some pretty darn good Pacers and Knicks teams.
It's almost a chicken-and-egg thing to me. Kareem/Magic/Worthy and Bird/McHale/Parrish are talked about the way they are because they each won multiple titles, rightfully so. The Bulls beat the best teams of the 90's (other than them) though.