2020s International Era decade 78 No dominant superteam; competitive balance improved significantly from 2010s 1970s ABA Merger Era decade 72 Most parity of any pre-modern era; no dominant dynasty; different champion almost every year 2000s Post-Jordan Era decade 72 More balanced than the Jordan era. No single team dominated the entire decade. Competitive parity improved. 4 Bad Boys Pistons Era era 70 More balanced than most dynasty eras. Pistons were not overwhelmingly dominant in regular season, just in playoffs. 5 Small Ball Era style_period 68 More evenly distributed than dynasty eras. Analytics helped smaller market teams compete. Still some superteam dominance. 6 1980s Showtime decade 65 Clear top tier (Lakers, Celtics) with significant gap to the rest. Not evenly distributed. 7 Larry Bird Magic Johnson Era era 62 Lakers and Celtics clearly the class of the league. Sixers and Pistons competitive. Rest were clearly behind. 7 Load Management Era era 62 No dominant dynasty. Multiple 50-win teams. Competitive balance improving. 9 Warriors Dynasty 2010s era 60 Warriors clearly the best team most years. KD addition made them historically unbeatable. Gap was significant. 10 Shaq Kobe Lakers Dynasty era 58 Lakers were clearly the best team in the league for 3 years. Conference imbalance was extreme. 10 2010s Superteam Era decade 58 Superteams created tier separation; Warriors 73-9 showed extreme unevenness at top 10 Expansion Era 1970s era 58 Talent diluted by expansion. More parity than dynasties. Multiple competitive teams across both conferences. 10 Jordan Era 1990s era 58 Bulls clearly on top. Several competitive teams but a clear hierarchy existed in both conferences. 14 Hand-Checking Era style_period 55 Dynasty teams created separation; but non-dynasty years had good competition 14 Big Three Celtics Era era 55 Multiple 60-win teams. Competitive middle tier. Reasonable win distribution. 14 1990s Bulls Dynasty decade 55 Bulls were clearly the best team most years. 72-10 season exemplifies the gap. Not evenly distributed. 14 Seven Seconds or Less Era era 55 Competitive league. Multiple 50-win teams. Suns among the best but not singularly dominant. 14 Bubble Era 2020 era 55 Season was interrupted so win totals were unusual. Competitive field when playoffs began. 14 Silver Era 2014-Present era 55 Warriors dynasty created some imbalance early. Post-dynasty era more balanced. Mixed overall. 14 Stern Era 1984-2014 era 55 Some dynasty eras (Bulls, Lakers) created imbalance but overall distribution was reasonable across 30 years. 21 Kareem Skyhook Era era 52 Lakers and Celtics dominated but competitive middle tier existed throughout. 21 Grit and Grind Grizzlies Era era 52 Competitive Western Conference with multiple 50-win teams. Reasonable distribution. 21 Lob City Clippers Era era 52 Multiple strong teams. Warriors emergence created top-heavy West. East was more spread. 21 Player Empowerment Era era 52 Star stacking created uneven talent distribution but injuries and chemistry limited sustained dominance. 25 Heatles Era era 48 Heat were clearly the best team in the East for 4 years. West was more balanced. 25 Allen Iverson Culture Era era 48 Lakers and Spurs dominated wins. Middle tier was competitive but clear top-heavy distribution. 27 LeBron Era 2010s era 45 Super teams skewed distribution. Warriors 73 wins. LeBron teams dominated East. Uneven. 28 Pre-Three-Point Era style_period 40 Celtics dynasty created extreme imbalance; 1970s improved but early decades were lopsided 29 Superteam Era era 38 Super teams hoarded talent. Massive win disparities between haves and have-nots. 29 1950s NBA decade 38 Huge talent gaps between top teams and bottom; Lakers/Celtics/Warriors dominated 29 Warriors Splash Bros Era era 38 Warriors 73-9 season. 67 wins. Consistently the best team. Very top-heavy distribution. 32 1960s Celtics Dynasty decade 35 Celtics dominance created extremely uneven competitive landscape 32 Integration Era 1950s era 35 Top-heavy league. Celtics emerging as dominant force. Limited parity. 34 George Mikan Era era 32 Lakers dominated wins. Very top-heavy league with Mikan as the only true superstar caliber big man. 35 Bill Russell Dynasty Era era 30 Celtics won 11 of 13 titles. Extremely uneven. The most lopsided competitive balance in NBA history. 36 Wilt Chamberlain Scoring Era era 28 Celtics dominated win totals. Wilt teams also excellent but rest of league far behind. Very top-heavy. 36 Pre-Shot Clock Era era 28 Very top-heavy. Lakers dominated. Limited talent distribution across small league.