You need to ask yourself, "why does someone like Hutch have a following on YouTube and is getting as much attention as he is?"
Once you answer that, you'll realize that it's not about money or subs. You'll also realize that automatically dismissing their opinion only because they've managed to capture a YouTube audience is dumb.
To supply to the topic:
MW3 will most likely play like MW2. For people that haven't played MW2 in a while, playing it will be the closest thing to preparing for MW3.