Then if you look up other studies, you have a lot of people trying to disprove that low carb diets work. So they site all the studies that conclude "no significant difference" in fat lost. But if you look it up yourself, you see that there is a difference.
I've checked out at least one other similar study that shows more fat loss with low carbs and more muscle retained with higher protein.
I positively understand the point of noting similarities in fat loss. What I gather from it is that with all else being equal, you still have to account for calories. If you aren't losing weight, drop calories and the fat will come off.
But aside from that, there still is a "slight" advantage of fat loss with the low carb diet vs low fat. It doesn't appear that you'll be able to get away with eating a lot more calories and get the same results. No! But if fat loss is the main goal, over time (with equal calories) the low carb diet will eventually show a better advantage.
Also, with the high protein, at this point I'm convinced that sufficient protein is helpful for muscle retention. But I'd have to look at more studies to see how much. I highly doubt you need a ridiculous amount such as that which a bodybuilder typically recommends.