Compare the specs of the Brunswick True Nirvana and Brunswick Mastermind Strategy 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 | True Nirvana | Mastermind Strategy |
| Cover Name | ECS Hook Pearl | Relativity Solid |
| Cover Type | Reactive Pearl | Reactive Solid |
| Box Finish | 500 SiaAir / Crown Factory Compound | 500 / 2000 SiaAir |
| Color | Black / Chrome / Gold Pearl | Blue / Violet / Orange |
| Core Name | Nirvana Ultra Low RG | Modified Mastermind Asymmetric |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.477 | 2.504 |
| Total Diff. | 0.054 | 0.048 |
| Int. Diff. | 0.013 | 0.013 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |