All through your comments here you have stated that all modern Historians support the case that Haig was a superb General and that all previous Historians were either left wing, subversive, has their own axe to grind etc etc.
The historian YOU quoted (05.50) said that Haig made mistakes, big mistakes.

All generals in history have made mistakes, but those historians also concluded that he was good.
Find me one who does not.

As T says, no-one has used any superlatives, just that the leadership was competent and effective.

It is not rue that I dismiss people for being left wing, but I do question the objectivity of people who are political activists, be they far left or far right.