You might want to look up the meaning of the word preponderance. Your not making sense.
You didn't know the ramifications of the word "preponderance" when you started this thread, did you? A preponderance is based on the more convincing evidence and its probable truth or accuracy, and not on the amount of evidence. But how can you establish the preponderance if you can't evaluate the evidence critically?
And please let us know exactly what the legal criteria for proof is.
Preponderance of the evidence is one type of evidentiary standard used in a burden of proof analysis. Under the preponderance standard, the burden of proof is met when the party with the burden convinces the fact finder that there is a greater than 50% chance that the claim is true. This is the burden of proof in a civil trial. Beyond a reasonable doubt is another matter.