here's the facts - KC had a great run against 2nd string QB's. We said that mattered, the KC loyal said back-up QB's are better than starters.
Now, we know the truth. Facing legitimate QBs, KC has given up 27, 41, and 35 points consecutively. Looks like the caliber QB you face does indeed matter.
The weird part of this - KC's success, coupled with the trade they made with SF, has all but guaranteed KC does not get a legit QB until 2015