So did we come to a conclusion?
Don't worry about the science. Drink 5 protein shakes a day for a week and you will get your answer.
I gave up on chicken breast or steak.
I'm mean sure that's quality protein right there, but it just doesn't fit my lifestyle.
Eggs, tuna, milk, cheese, and powder; all staples in my diet.
You see these videos of pro bodybuilders eating pounds of meat; I really don't think it's necessary to eat like that, regardless of how big you are.
I love Internet tough guys!!!!
If you know anything about research design you would see instantly why this is flawed. You have TWO independent variables. Meaning you have a type 2 error right off the bat without even testing... Which is exactly why, among other things you won't find research like this.
There is no substitute for meat when it comes to protein. Meat provides you with essential nutrients that your body needs. Protein shakes are supplemental not to be replaced with real food but to assist you in your diet and nutritional needs. Make sure you calculate your macros and know your daily caloric needs and if you are looking to boost your protein shakes with calories add peanut butter and oats when necessary.