I'd say the Ki67 did real great. We didn't exactly expect 20 163's against us. Against 20 163's any bomber would have died, big or small.
Still the Ki67's killed a whole lot of 163's, "aka" got 3 alone.
If the 163 base was to be taken down first the Ki67 would make it without much trouble, specially with better escorts (P51, P47N ,F4u4, Ta152)