It's your opinion, and your definitely entitled to it, and I can for the most part see where your coming from on this. Especially with the different end goals. But, I think this is one of those things we don't really see eye to eye on. And the training differences between bodybuilders and powerlifters, I honestly think there's a lot more in common then most people see. Especially if you go back 10-20 years. There's been a lot of trends over the last few years that each have their merits. But I don't see the results of any of those systems as being truly, clearly superior to the results of the older lifters. Could also be lost in the fact that we're typing on the internet rather then actually talking. Sometimes I read things a little different then their intended I think. And you've given a lot of sound advice on here from what I've seen.
Sorry for the side track.
Back to the topic of protein I did find two decent studies while I was at work today on lunch break. I was rather surprised they didn't have a given length of study (duration) called out on them though. Good call on looking for that on the studies Rodja.
Effects of variation in protein and carbohydr... [Am J Clin Nutr. 2006] - PubMed - NCBI
Higher Dietary Protein Intake is Associated with Lower Body Fat in the Newfoundland Population
My interpretation is that both these studies SUPPORT a high protein diet.
Again, I suggest you keep an accurate diet log for as long as possible, combine that with a good blood pressure monitor, weight scale, and some sort of body fat analyzer. Keep track and record. Then you can make adjustments based on how your own body works. I have a spreadsheet that I've found is easy for me to update now that we all have smart phones and cloud services, so when I eat I update it. I struggled with that when I had just pen and paper.