well, no one knows what created the big bang... we know what happened some moments after the big bang but not in the 0 hour... even less before the big bang. whatever it was, the size does not matter, what matters is the energy, wich have to be enough to create one universe and antimater is closer than u think, positrons are present in some radiactive decays, its very easy too "catch" their energy when they annihilate with electrons, wich create a gama ray with a very define energy of 1022 KeVs…