If you find that table too perplexing, I have something slighlty more consumer-friendly.
Meet the Xiom tree.
Same as the rubbers table, that poster was provided by TSP(technically Victas now), the official distributor for Xiom in Japan.
My interpretation:
Pro is spin-oriented;
Asia is speed-oriented;
Tour is best of both worlds;
Euro/Elite is control-oriented.
Omega is flagship;
Sigma ought to be the mid-range but looks abandoned now;
Vega is budget.
If that is not convincing enough, from the editors of Table Tennis Kingdom:
初中級者に圧倒的な支持を得ているXIOM（エクシオン）の『ヴェガシリーズ』。高い性能を持ちながら、低価格というコストパフォーマンスの高さが人気の理由だ。
[Vega's popularity among beginner and intermediate players is due to its high price-performance ratio.]
中上級者向けの『オメガ』シリーズ、初中級者向けの『ヴェガ』シリーズがヒットを続け、ドイツ製ラバーを牽引しているブランド・XIOM（ エクシオン）。
そのXIOM が『オメガ』シリーズの最上級ラインとして開発に着手し、これまでにない新たな研究方法と製造工程を経て誕生したのが『オメガ7』だ。シリーズとして4 種類のラバーを予定している『オメガ7』だが、全てがコンプリートするのは来年7 月。
[Xiom, a brand driven by German-made rubbers - Omega series for intermediate and expert players and Vega series for beginner and intermediate players. Development began for the Omega series as Xiom's top-of-the-line. Through a brand-new R&D method and manufacturing process, the Omega 7 was born. 4 types are planned for the Omega 7 series, with all releases due by next July.]
Xiom's reluctance to clarify the positioning of the 3 classes brings immense confusion. But hey, one could argue that's their merit - Xiom = mess, which is a self-evident truth, the very definition of axiom. Tada! Brand recognition in an instant.
