Almighty Magic is the strongest form of magic because means using magic of omnipotent nature, making the wielder supremely powerful. This an extract that could answer your other questions "The user possesses magic of omnipotent nature, entailing that the user is Truly Omnipotent, but focusing it all on what we know as magic and everything associated, related and branched out from it. This includes the esoteric, mystical and supernatural. Essentially, the user is an Omnipotent being, but in a magical aspect and form, which means the caliber of magic possessed surpasses all the rules and has no need for any justification as to how or why feats are accomplished. Magic, for the most part, is about feeling and gaining power from one’s emotions; this is why magic is the counter-balance to science. While Almighty Science users may need to understand the fields of science to control their vast powers, Almighty Magic users do not possess that limitation, they are simply able to do as they feel."