In fact, Asgara, there is some chance that the current theory of gravity is not right. We don't have a theory of quantum gravity yet. It is more likely that the ToG is wrong than that the ToE is wrong.
the Universe itself and why life exists instead of nothing is evidence by itself.
These things are predicted by both sides in the same way. Therefore they are not useful evidence to distinguish between the conflicting ideas. This is not unequivocal evidence for God.