Well, I understand your point about Peace Walker but this is called the "HD" collection. And I, for one, am getting tired of them calling things HD when they are not. HD starts at 720P. I like the idea of bringing older games to the current gen systems but most of them just upscale and use the same low-res textures from the original game. And if you are calling the package an "HD Collection" you need to put that on the screen.
That being said, I can agree with any review that highly rates this MGS collection because the game are in a class by themselves.