You could also say it was the move to Specialized during his prime that stopped him being GOAT. He was untouchable on Trek, then jumped on a bike that didn't suit him, and spent a 1-2 seasons developing prototype links, front triangles, then a whole new bike that finally got him back to winning ways. His move to YT was a much more successful change. He immediately felt at home on that bike and the Gwinner was back to dominating ways. He was also a clear #1 at that team and built the team around him. Don't be too quick...