I reckon both are fake mate.
I just purchased a signed Magic jersey and did a tonne of research looking at hundreds of different examples on the web comparing his signature to the one on my jersey and I never came across any examples that matched the examples you uploaded.
The biggest thing is that his signature has stayed very consistent for years and these are just way off. Even if these are examples of his earlier signature, the cards are too new for him to sign them with his old mark.
Hope this helps