This type of argument sounds unintelligent. How much did he pay his senior counsel to fashion such a dumb defence? He might as well swear a violent death.
Imagine a CECA defending himself by saying "if my qualification was fake, MoM wouldn't have accepted my application".
CB lah ... MoM accepted your application simply means if your qualification was fake MoM at that point of time had yet to find out.
This is the same as my ex mentor using a decree of annulment as proof that she is still a virgin.