Early Global Authentication was just as good as any other TPG. They devolved later on, but depending on when this card was graded by GAI, it could've been perfectly legit in that slab. Lots of assumptions being made here, and lots of NON apples-to-apples scenarios being thrown around.
Perhaps this particular thread should revert back to its original subject matter of outed altered cards, and we debate the cracked out card solely within the other thread.