Compare the specs of the Roto Grip Attention Star S2 and Roto Grip X-Cell 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 | Roto Grip | Roto Grip |
| Ball Name | Attention Star S2 | X-Cell |
| Cover Name | eTrax PLUS Hybrid | eTrax ULTRA Solid Reactive |
| Cover Type | Reactive Hybrid | Reactive Solid |
| Box Finish | 2000 Abralon | 2000 Abralon |
| Color | Berry / Silver / Black Aqua | Turquoise / Navy / Black |
| Core Name | Momentous AV + AI | Nucleus + AI |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.48 | 2.50 |
| Total Diff. | 0.049 | 0.056 |
| Int. Diff. | 0.017 | 0.019 |
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