Allah forbids the evil things and enjoins the good things. When Sharia law existed, every single democracy on the planet was subservient to it at its time, when one of the caliphs tried to change even 0ne aspect of sharia law with regards to its punishments, the crime rates spiked, he did this for one year, and was forced to change it back,, and then the crime rates went back down.
Sharia law takes care of the poor and the weak, democracy neglects the poor and props up the rich and punishes the poor for crimes the rich also commit and do not get punished. Democratic laws are always changing, sharia is always the same, etc.
Many many many ways sharia is superior to every other type of governance.