Subway’s “Eat Fresh” campaign is all very well and good, but fast food is fast food. Sure, you can order a six-inch turkey sub loaded with vegetables and no cheese or mayo with a side of apple slices. Or you can get a footlong tuna salad sub that has more fat than a Big Mac and fries. Which do most customers choose? Yet Subway’s latest ad slams burger chains for the unhealthiness of their food, showing kiddie pools full of burger grease.