Compare the specs of the Roto Grip Attention Star S2 and Roto Grip Optimum Idol Pearl 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 | Optimum Idol Pearl |
| Cover Name | eTrax PLUS Hybrid | MicroTrax Pearl Reactive |
| Cover Type | Reactive Hybrid | Reactive Pearl |
| Box Finish | 2000 Abralon | Reacta Gloss |
| Color | Berry / Silver / Black Aqua | Bubblegum / Iris |
| Core Name | Momentous AV + AI | Ikon + AI |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.48 | 2.47 |
| Total Diff. | 0.049 | 0.056 |
| Int. Diff. | 0.017 | 0.000 |
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