saying that scot's strength is in "have no weakness" is missing the fact they have the best allied anti-tank deck in the entire game. 17 pounder ambush is basically the best way to take down the axis cat and scot have the most vetted 17 pdr. Even in Phase A, the vetted 6 pdr make them resilient to vehicle rush.
Scots have weaness, they have no proper arty in phase A. The 2-inch carriers are very difficult to handle if you have open ground in front of you.
In phase A you may have a hard time against at guns.