In the PHD, the macro breakdown is roughly 30% carbs, 20% protein, and 50% fat. Their recommendation for losing weight is to keep the carb and protein calories the same, but reduce fat. They also recommend a couple tablespoons of coconut oil a day.
I can see from your post on the SLD and from reading the PHD, that I have been sabotaging myself in weightloss efforts. I didn't start looking at starch and fat hard enough until I stumbled onto the Potato Diet of which I write about a lot...
In the past, I was maintaining well on about 10-20% carbs, 30-40% Protein and 50% fat. Whenever I would try to bust through the plateau, I would cut carbs even lower and up fat.
I'm glad you found your Shangri-La, but I have to say, I'll bet it works so well for you mainly because of what you are considering 'cheats' ie. potatoes and corn. You have stumbled on the perfect macro ratios for you! Good job. Keep it up and keep telling us about it.