|
As a fact, Kariya HAD potential as a mage, but he abandoned the Matou family aka did not train. Crest worms did not increase his abilities but instead gave him the training to be able to use his potential. If he didnt he would have no way to be able to compete in just 1 year of training.
Remember that Kotomine had 3 years of training (and hes average at best) and he was considered a genious by Kiritsugu after examining his profile.
Waver despite his looks is a very competent mage despite being and a 3erd generation mage (the more generations the more knowledge accumulated since it passes down to the next generation) albeit young, and lacking experience. Think about him as the Rin version in the 4th War. An average mage doesnt comes up with an entire thesis about magic at his age
|