Gonna have to agree with him, why do you think the 'N-WGIX' was the final boss? and it was piloted by a 'J'?

Basically, it's a copy of a very important 'NEXT' type armored core from AC:FA called White Glint, made by the Foundation to be piloted by J, a clone/fusion of the DNA data from all of the best pilots of the AC4/ACFA era, but mostly a 'Joshua O'Brien'.

Well, IIRC, anyway.