here's the thing...
weapon lvl vs enemy lvl will determine the ranking
if your weapon lvl is high (like s or a) and ur enemies are
on a lower weapon grade like d or c of course you will be penalized coz you have the handicap of having higher weapon lvl..if you want to have a higher ranking then you should be the underdog..same weapon lvl with enemies or lower but of course the battle is harder

its ur option