Is there a difference between leather performance? Like genuine vs top grain vs full grain? Would a very thin genuine leather still perform better than synthe

Is there a difference between leather performance? Like genuine vs top grain vs full grain? Would a very thin genuine leather still perform better than synthetics? I am not familiar with textiles in this area, but they don't make bullet proof vests out of leather last I checked... I presume there are good synthetics (better than leather?) out there?