@Fil Albuquerque,
In fact the whole problem of "God" vs "Multiverse" is nothing other then a cultural clash, a peanuts debate, in which basically we are discussing the proper name we should apply to "it", the "thing" !
On a deeper impartial level of thought the property's excluding cultural detail here and there are very much the same...
Multiverse it is very much eternal uncaused and cause of everything...it is omnipresent in itself as an entirety, or in its beingness omnisciently aware of itself in a mathematical causal sense, that is to say, that information circulates and relates in such a way that effects reflect in a loose sense "awareness" of causes translating them...it is also omnipotent once it probably exhausts statistically the whole spectrum of possible logical potential Worlds there can be...
...from where I stand the only advantage on the atheist side it is the openness to falsifiability and the non separation of creator and creation which makes sense in set theory once obviously the sum of two things is always bigger the any of its constituents separately...in sum to say that there is no such creator nor such creation but just the whole of reality.