Explanation for defeat of Order of St george in Leger

this horse looked a star stayer for me, from 1m6f to 2m4f, i could see him running up a massive sequence. so to see him get beat by wicklow brave was some shock........im not buying this nonsense that moore had him out of his ground.........there were 4 runners and he never had him too far back. the horse had every chance and moore couldnt seem to be able to straighten him until final moment............that being said, he probably ran about a stone below par..............

was he undercooked cause the arc is the main aim?............just like minding was undercooked in irish 1000g, with bigger targets ahead?