Burning thought
Restricted
Size matters little in this context, all of Kratos' strength is not from size, the fact he can still toss the Colossus at human size is proof of that, the fact remains his power was only drained by an amount we do not know. We cannot assume his strength was drained, all we can actually see is Zeus took away his size.
Furthermore even if we assume half of his strength was taken away, double the height of the colossus of rhodes and you still only get 60 meters....that star destroyer is not only 1600 meters, full of crew and is a fat ship as well. It has more mass than the Colossus, it is made of high density materials that are made to protect against weapons of the Star wars era as well, meaning its going to be heavier than bronze even IF we stupidly assume the armour of a Star destroyer is as thin as the metal on the colossus.
Either way, i think TGE was completly wrong and did not understand what he was saying.