HOW GOOD IS YOUR PROTEIN

Since apparently I'm spending my day doing medical and nutritional research, here's a neat Wikipedia entry I discovered. It's about the Protein Digestibility Corrected Amino Acid Score (PDCAAS).
It proves just how important whey is as a supplement.
More good guidelines to impact the effectiveness of what you're eating.
http://en.wikipedia.org/wiki/PDCAAS

More nutrition information to build on my last post:
http://en.wikipedia.org/wiki/Whey
http://en.wikipedia.org/wiki/Ricotta
Those are the links to 'whey' and 'Ricotta Cheese' respectively. After reading this - and after the thread about whey vs. casein, I'm wondering if Ricotta Cheese would be an effective alternative to Cottage Cheese. From what I've found, Ricotta Cheese is high in whey proteins while Cottage Cheese is high in casein proteins. Both have the same texture and fat content and a relatively similar taste, plus Ricotta is lower in sodium, so why not eat Ricotta during the day and Cottage Cheese in the evening? Does anyone do this? I've been looking for ways to maximize my nutrition intake at the macronutrient level, so this might be something to consider.
Plus, I'm Italian, so I can always use another excuse to eat lasagna & cannoli.