The NBA League is More Equal than the ACB (IMAGE) Spanish Foundation for Science and Technology Caption The level of competitiveness between NBA teams is more stable over seasons than that of the ACB. Credit Keith Allison Usage Restrictions Creative Commons (commercial use) License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.