You are correct. Lean mass matrix is the name of the protein powder he uses. It's not a bad product but it's very expensive for what it is. You are paying a lot of money for all the marketing and branding behind the product. You could get the exact same thing for a lot cheaper by purchasing a generic version.
The brand isn't particularly important when buying supplements. What matters is the ingredient list and supplement facts panel.
All protein powders are not created equal. You really need to be a smart consumer in today's market and do your research. Look at the ingredient list and supplements fact panel on every supplement before buying it.
For a whey protein - you want to see nothing but that in the ingredients list. Whey protein, natural flavours, a natural calorie free sweetener like stevia and then maybe some salt, soy lechitin and cocoa powder. There are a lot of good products on the market. I personally use isolation from n2bm.com. A good whey isolate should be pretty much fat and carb free. Isolation has 26g protein, 1g carb, 0g fat per 30g scoop.