What doctrinal changes did the Westminster Confession bring to the Church of Scotland?

After the reforms of the 16th century, the Scots Confession served as the primary confession for the Church of Scotland for just over 80 years. In 1648 it was replaced by the The Humble Advice of the Assembly of Divines , a later revision of which is widely known as the Westminster Confession of Faith and is still used today in many Protestant denominations. Meanwhile I don't hear much about the Scots Confession. I'm curious what changes switching to the Westminster Confession brought over the Scots Confession of the previous century. According to what the Westminster divines set out in the WCF, on what points would the Scots confession have been considered either incomplete, not clear, or outright wrong?