It's trivial because you're talking about the thermic effect of your body processing the nutrients. You're talking about an 8% differential when most people's problem tends to be more related to balance, taking in the right amount of nutrients to be healthy, exercise, etc.
It's also trivial because anyone concerned about that differential who will actually see results from its manipulation will often be guided not by those thermic effects, but instead by the way his or her body reacts to ingesting different P/C/F ratios as it relates to performance.
I mostly say that you shouldn't worry too much about that thermic effect, though, because it shouldn't be used as a reason to take in more carbs than fats in a way that's different from ratios that you normally hear. Also note that carbs have lower levels of satiety etc--in other words, there are many countervailing forces acting around the thermic effect that influence decision-making regarding nutrient profiles.