I watch calories too since I am in weight loss mode. And just like the banana comment above, it might be on the lower end of their percentage but if that were on a 1300 calorie a day, that would be a much much higher percentage.
PHD, I don't know if you have read it but Mark wrote the forward for the new book, and it breaks it down like this:
That is for optimum health.
For weight loss it is more like this:
500 calories carbs (don't count veggies)
500 calories fat
If you are training, add 500 more calories per hour of athletic training.
So for weight loss, I shoot for 40% fat - actually I just try to stay under 60 grams of fat per day. So it is usually more like a 3 way split and I vary my calories from about 1200 - 1600, but usually I try to stay around 13-1400.
I seem to maintain when the fat is up around 65% or greater, even with calories on the low end.
*I just re-read through some of my notes, and he has a slight tweak if the goal is to add muscle. 30/18/52 c/p/f