The "supernatural", "being" and "superior powers" parts are very clear. If you can accept that a supernatural being with superior powers created existence, then you cannot be atheist.
If you believe that what you call "God", with a typically monotheist stance, is whatever created "existence" whatever that means, and whether or not it was a natural process or a supernatural being, then your personal definition of "God" is not the common one, and you should have given it earlier.
Also, I do not ignore the topic of where existence comes from (although that formulation sounds quite weird to me) but I leave it to science, and I am not an atheist either. I do have difficulty following the reasoning of occidental monotheists though, who seem to try very hard to spin their definition of a single "God" in order to claim that atheists are just believers like any other theist.
Whatever created existence (or the big bang) is by definition supernatural (which means outside nature). So my definition is not different, just differently formulated.
> If you can accept that a supernatural being with superior powers created existence, then you cannot be atheist.
Using your definition no atheists even exist, or at least they are illogical because clearly existence exists. It was created somehow. Or are we going to argue about the word "being" in that sentence?
Because if you are, know that I use that definition because any other is not sufficient to describe the full range of human beliefs. So yes, there is a range in atheism, it is not binary.
>Whatever created existence (or the big bang) is by definition supernatural (which means outside nature).
Unless nothing created existence, and the big bang was a natural event unrelated to the existence of existence.
>are we going to argue about the word "being"
Maybe. "being" is pretty clear and necessary to have a God. Wind comes from outside the ocean to make waves, but it is in no way a being or a God. No matter how 'supernatural' it would be from the perspective of ocean=nature.
No binary decision is ever truly perfect, but the yes/no of atheism is pretty damn close.
I define God very simply: That which created existence.
You can not just disbelieve in existence, so you have to clarify what kind of atheist you are.
You are probably using a definition of God as: An intelligence that created existence.