Since Dragon Ball Z: Tenkaichi Tag Team has no official online servers (it uses ad-hoc wireless), there is no central authority to ban you. However, if you use community platforms like Evolve or XLink Kai to play online, some purists dislike maxed saves. The general consensus: For casual fun, a hot save is fine. For tournaments, use a fresh save.
: Connect via USB and navigate to /PSP/SAVEDATA/ on your Memory Stick. dragon ball z tenkaichi tag team save data hot