Stupid question, ..but if everyone on earth voted which god was the only true god, which god would win ?
Based purely on volume, I suspect $ would come out on top, not that €, ¥, or £ wouldn't also show a good effort.
YHWH would be the winner, as he is the god of the jews, christians and muslims. Together they are around half of mankind.
China and india are big, but they are not a single monolithic religion, they have muslims, christians, conto, buddhists, hindis etc.