It does seem unlikely; however, with the possibility of multiple universes, it doesn't mean it is. If we look at the very beginning of time, the event itself, in cosmology, the Big Bang is a scientific theory, which has sufficient evidence to back up it's existence, more so than any particular "superior being", the universe, space time continuum, everything, emerged from a tremendously dense and hot state, that's not to say that these events have been happening before, or are continuing to do so outside the scope of our own universe, we most likely will never know.
But the fine tuning and pointing to superior forces theories don't cut it with me, take winning a lottery, with odds of a few million to one, just because someone gets lucky, someone wins, it doesn't mean there was some superior being who manipulated the odds, fine tuned them so that this individual would win. The same with the Universe, just because we got lucky doesn't mean that there was some superior being who tampered with the odds.
But to understand the theory set out, we need to understand the various stages of creation, first the big bang.
As already mentioned, the Big Bang is a scientific theory, which has sufficient evidence to back up it's existence, more so than any particular "superior being", the universe, space time continuum, everything, emerged from a tremendously dense and hot state.
Next comes the primordial nucleosynthesis; which is the production of nuclei during the early stages of the universe.
After which comes many processes, such as the triple alpha process; in which 3 helium nuclei are transformed into carbon. Many of which are produced in stars.
We now need to attach the odds of each individual state happening on it's own merit, otherwise it would be like saying the lottery winner's chance of winning when they did was billions and billions to one, as there were millions of sperm at the time they were conceived, the odds of them ending up where they were on that particular day to buy that particular ticket, and you'd be examining everything. The fine tuning theory could then be extended to anything and everything, which still doesn't explain many of the world disasters, and why one particular person should be anymore fortunate than anyother.