Also, like someone else said earlier, we NEED this kind of disambiguation. Most normal diets -- including veg, ornish, atkins, primal -- all have a lot in common. Almost all say ixnay to liquid sugar and refined junk carbs, for instance.
What if you make all the calories so sh*tty that they just barely keep you alive? Make em transfats, omega 6 veg oils, processed wheat, sucrose vs. your standard "real food" atkins/primal. 2500 kcal of the crappiest food you can think of vs. 2500 kcal of good primal/LC/"real" food. Maintain out for 3 years. You CICO peeps really think that would lead to IDENTICAL body compositions? Not slightly different. IDENTICAL. The CICO "hypothesis" demands this result. You'd have to be out of your gourd to believe that would happen.
Let me say that again.
According to CICO, both groups must wind up with IDENTICAL fat tissue results, assuming calories are totally controlled. Not slightly different. IDENTICAL.
The big problem with CICO as it's typically understood is that it's probably not even a viable hypothesis. It's a logical error, the confusing of cause and effect. It doesn't explain anything. At the end of the day HOW do calories "turn into" fat, if not for hormones like insulin and enzymes like HSL and LPL and ASP and etc?
HOW HOW HOW HOW? ANSWER ME YOU FOOLS!! Is there a calorie receptor you've discovered? If so, let the world know, because you've won a Noble Prize. If not, then you need to explain things, ultimately, in terms of hormonal regulation of the fat which inevitably leads to insulin and etc.
To give another extreme example of how not all cals are equal: put someone on a 100% all carb diet. No protein, no fat. In a few weeks, that person would die (and thus lose ALL his fat).
So maybe I stand corrected. The Ultimate Foolproof No Way It Can Fail Diet is a 100% carb diet, because it will kill you, and you will lose all of your excess fat in the process, 100% of the time.
CICO is right after all. I feel so ashamed.