User blog comment:Smaster28/Most powerful Magic/@comment-77.88.127.110-20170427101637/@comment-31076929-20170501072248

@Smaster28, I said Memory Make was a powerful magic, not that Rufus was a great wizard. Internal magical power and combat skill also matter, and other Sabertooth mages have both of those, which probably puts Minerva, Sting and Rogue ahead of him. Just look at the Fairy Tail Guild in comparison, Fire Dragon Slayer magic is arguably more powerful than requip, but at the start of the series Erza is above Natsu due to combat skill and the range of armours she has commissioned to make the most of her power. Natsu has stronger magic, but Erza is smarter with hers, and I think that's kinda of what happened in Sabertooth.