Do you not think some belief systems are better than others? If not, do you not think some belief systems are more conducive to life, happiness, thriving than others?
I believed that trite "all beliefs are equal, valid, and true in their own way" hogwash when I was younger, but you're never going to see religiously motivated violence from Jainism, for example. So can you tell me by what metric a Muslim theocracy would be as good as a Buddhist theocracy? Even the most obvious metric falls down--you might say that Muslims would be happier in a Muslim theocracy. However, looking at both sides (this is a comparison, after all), Muslims would be far happier in a Buddhist society than Buddhists would be in a Muslim society.