The circumstances were totally different for Scotland.
Scottish kings ruled England for a century preceeding the Acts of Union. Steps were taken to preserve the Scottish legal code and otherwise put Scotland on an entirely equal legal footing with England, especially in regards to trade.
Given there had been a back and forth trade war between England and Scotland, not to mention disagreements about the succession after the death of Queen Anne, the Act of Union was actually a huge compromise for both sides, and dealt effectively with many of the issues arising from personal union, such as the Scottish Parliament doing one thing, the English Parliament doing the exact opposite, and the monarch having to try and get them on the same page.