While going through security somewhere with my crew I overheard someone getting a 'bag check'. The TSA was holding a 1 qt. baggie with bottles of liquids in it.. one of them was larger than 3.4oz.
The TSA guy said "This one here, this is bigger than the maximum which is 3.4 ounces. The next guy might not let that slide but I'll let it go this time."
I'm glad everything is standardized.