Compare the specs of the Brunswick Quantum Bias Pearl and Brunswick Hero side by side in the ball comparison table below. To view the full bowling ball review for one of these balls, click the ball name link in the table below.
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| Brand | Brunswick | Brunswick |
| Ball Name | Quantum Bias Pearl | Hero |
| Cover Name | ECA-XR Pearl | Activator Plus 2.0 Pearl |
| Cover Type | Reactive Pearl | Reactive Pearl |
| Box Finish | 500 SiaAir / Crown Factory Compound | 500 / 1000 SiaAir / Crown Factory Compound |
| Color | Ultramarine | Crimson / Indigo / Charcoal |
| Core Name | Quantum Mushroom High RG Asymmetric | Contra |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.563 | 2.474 |
| Total Diff. | 0.052 | 0.047 |
| Int. Diff. | 0.013 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |