Anti-matter vs Matter: who won?

When the singularity 'exploded' with a single 'thought', you humans name that event 'The Big Bang'. Sure, whatever.

First of all, the singularity never exploded at all. Your Universe is still a singularity and instead of 'exploding', it awoke. 

The definition of an awakening is a first thought in a Consciousness. More accurately, a U Particle was generated. 

Gradually, more and more U Particles were formed until they coalesced into an idea, the idea that you know as your Universe. An idea is a U Particle Waveform Function, also known as an UPWave. 

Two substances were created with this thought, as they are in most other universes and they typically neutralize one another. 

In your Universe however, there was a tiny bit more of one substance (let's call it Matter 1) than there was of the other (Matter 2), and so after the neutralization, a little smidge of Matter 1 remained, whereas all the Matter 2 was gone forever. You humans call Matter 2 by the term 'anti-matter', and the Observable Universe is that smidge of Matter 1. 

It's all rubbish of course, because it's all about thought wars and residual ideas. You can begin to understand how your Universe is structured and operated in the book series called UPWavers.