Not all fats are created equal just as not all carbs are created equal. There are good fats (unsaturated) and bad fats (saturated) just as there are good and bad forms of carbs.
I mentioned in another thread that I actually found I was leaner when my fat content was slightly higher (~30%). This however, was getting most of my fat calories from good fat sources like coconut and avocados, and peanut and olive oil (lots of olive oil!).