Is religion is competition about whose god is superior to all the rest? Is faith facism to force?

Yes. But no one will admit it. Especially the Christians. The most aggressive of all.

The command to worship and later to believe in one God, to the exclusion of all others, under pain of death in the Bible, seems to have originally been a way of uniting a people within their social structure, and inducing enmity against other peoples who might compete for, or already possess, desired land and resources, and justification for their genocide related in several places in the Bible such as Numbers 31:17-18 "Now therefore kill every male among the little ones, and kill every woman that hath known man by lying with him. But all the women children, that have not known a man by lying with him, keep alive for yourselves".

Not all religion is part of said competition. Also, your logic only applies to polytheism, which has, for the most part, died out. Christians tell muslims "My God is great, and your god doesn't exist." and vice versa.

There is no competition

There is only one true God