So first of all they need to control the study better to figure out if it is saturated fat -or- obesity -or- both. Or else as you were explaining if they narrowed it down to 60% saturated fat diets then this was a poorly written summary.
I don't know how one can consume a consistent diet of 60% saturated fats unless ordered to by scientists. And as you said, the effects could be neutralized by dietary modifications.
I am on a low carb diet for the last 8 or 10 weeks, but I also don't eat a lot of saturated fats. And I dropped about 20 lbs of "tire" which was annoying me. I wasn't obese but I did add some weight and am taller than average. Next month I will switch it up and add in more fruits because I love summer fruits. Mostly went on the low carb diet to get my summer swimsuit body back :-)
Also to the best of my knowledge I don’t have PC, so I don’t think I need to worry about PC disease progression at this point.