Shaivism is not greater than Vaishnavism as Lord Shiva is also a worshipper of Krishna. The Hare Krishna movement was meant to help everyone achieve enlightenment on earth and reach the kingdom of god. There are no fallen angels in accordance to this as the second coming of Christ and the Kalki Avatar are the same person. If you are to read the Kalki Purana and the appearance of the second coming of Christ you would realize this.