Joseph looked like he had only ever hold the sword in his hand when he oiled it, never in battle or even practice.
Of course he did look like that, because he was fighting someone with much more experience and much stronger than him, it's like a teacher fighting his disciple.
Professional vs amateur.
Champions League vs 2. league in any country.

Doesn't mean he can't handle the sword, just means that the other person recieved way more training and practice.