Not quite. Admin can have different permissions, but there is no "super admin". You can have all permissions or some permissions, but there can be multiple admin with all permission. There isnt a single admin that has more than all the others unless you specifically have set it that way.
As a cloud customer, if you want us to confirm your position we can certainly do that. Submit a ticket to us with the name of your account and the other admins account, and we can certainly ensure you are better informed of what you need to do