If you were to outfit a touring frame with all the exact same components as you would put on a racing frame, the differences might be hard to detect. They would weigh within a few pounds of each other. What makes the touring bike different is it's ability to do a great many more things, handle a wide range of tire sizes, securely bolt on racks and fenders so you can actually carry stuff and ride when and where you want to. Once you equip a touring frame with all the stuff that makes it more versatile, it will weigh several pounds more and it will feel different. And you might like it.