Then I will.
When a person provides a rule (e.g., "Sark always recruits great QBs") and another person points out an example of where the rule was untrue, the first person sometimes responds "well that's the exception that proves the rule." That response is 100% retarded. Showing that rule is not always true does not, in any way, shape, or form, prove a rule. It does the opposite. This modern usage of that phrase is maddening.
The phrase "the exception that proves the rule" is meant to refer to a situation where stating an exception shows that all other situations are the rule. For example, if the sign on the door to a bar says "Closed on Sundays" you can infer that the "rule" is that the bar is open every other day of the week. Instead of saying the days that the bar is open, the sign proves the rule by saying the one day it isn't.
So in this instance, the "rule" is that Chris Simms was an above average QB. The "exception" is that he was comparable to Major. Because both Simms and Major were far better than other 3-star QBs, this proves that Chris Simms (and Major) were both above average QBs. It's not quite as clean-cut as the sign on the bar door example, but it works.