In my Campaign as Venetia the Scots utterly destroyed the English, infact England no longer exists because the Scots took all of Ireland, Wales, and Britain. They even took Antwerp and Burges from the HRE. Which I took in return after they attacked me. In the AI department Scotland lacks, I had one, two star general with a very small yet able force, 5 stacks of Scottish cannons and pikemen later he was a 6 star and with a even smaller army. Honestly I keep beating the ai as they slowly charge with Pikemen that get shot up from crossbowmen and ribulets. Infact the AI was so bad I managed to have my general go behind their lines and take out all their artelliary. Which was half their army.