No double standard...the facts speak for themselves. Brady is a cheater, a liar and was suspended. He cannot even be considered as the greatest...not even in the same discussion except as an example of someone who squandered their good fortune and chance for glory.
Yet Montana is not a cheater because he wasn't punished by a higher authority. Again, you have a double standard, you just refuse to admit it. The facts as you say speak for themselves. Brady is cheater because a higher authority said so. Montana is not because a higher authority didn't say so, and he admitted it.
It is your standard, not mine.