I'm going on a diet then!
Seriously though, I do agree a lot of people overfeed without realising it. A friend of mine has 2 collies and one in particular is like a blinking TANK, I've made more than a few hints that she ought to cut their food down a bit but she still free feeds them. She insists the porky one is about right and the other, who is actually overweight in my eyes, needs to put weight on
Personally I don't follow feeding guidelines, I think one of my dogs would actually be a blimp if I did. I just go on how they are looking, if they are looking a little plump I'll cut the food down for a few days and cut out any fattening treats like pig ears etc.