Even Esmerda was out away from the allies, Ruby was useless too, so it was actually 4vs4 not 5vs4, if you see the last scene again, Ruby was the error pick, should had pick phy damage dealer.
not really, it actually made sense to fight there since it was a solid 4v5 and everyone was ready with ults its just unlucky cuz mathilda 2nd give shield + dash and yss dash but glad that btk won cuz i like them