To get the BT3 feel on PPSSPP, you are likely looking for . This is the only PSP game that uses the "behind-the-back" 3D camera angle seen in the Budokai Tenkaichi series.
Dragon Ball Z: Budokai Tenkaichi 3 (BT3) was never officially released for the Sony PSP, dragon ball z budokai tenkaichi 3 iso ppsspp highly portable