not necessarliy, i went though the normal battle with NO tissues, had easy ass handicaps (3 full cures, 3 status ailments that were canceled by ribbon, and 1 lucky 7) and got around 12,000 BP. i think it just has to do with how quick u battle, and how much damage u incure. i got through and didnt lose any hp, so i think that might have something to do with it, not the handicaps. but i dunno, it could be that too... im not saying ur wrong, but i just think otherwise. both could be right for that matter

sticking to topic on hand... ive got through with all the characters... even Aeris, and won all 8 matches. but i mainly use cloud or red xiii