reading your last post I can't help thinking that you're possibly approaching the problem from the wrong direction. It is easy to think that "primal" refers just to the diet (or diet + exercise) but really it describes is a whole lifestyle. I realise that a lot of people are unwilling or unable to modify their lifestyle in a big way but IMO it is a prerequisite to doing primal "properly". The most important things as I see it are staying active and minimising stress. I personally don't think it's very helpful when people say, "grok did this" and "grok did that" but obviously Grok didn't have a stressful job in advertising that involved him sitting on his butt all day drinking coffee and smoking! You might find it easier to adopt the primal diet, etc (and might find that it works better for you) if you can also adopt the other aspects of the primal lifestyle.
Also FWIW when it comes down to straight fat loss, I found the most effective method for me was cutting out all sources of sugar (including fruit and "lower sugar" baked beans and other insulogenic foods.) for the period of time I was cutting. When I reached my desired weight I could re-introduce these foods and maintain the weight.