If you have already beaten Tenkaichi 3 a decade ago, you have earned the right to skip the grind.
Dragon Ball Z: Budokai Tenkaichi 4 (Team BT4) - Videogaming Wiki dbz budokai tenkaichi 4 save file
If you are on version 13 or later of the Team BT4 mod, follow these steps at the (where you select game modes, not the title screen): Hold L1 + R1 throughout the entire sequence. If you have already beaten Tenkaichi 3 a