We have comparison shots of Metal Gear Solid: Peace Walker’s PSP and HD Collection versions, too. In case you missed them earlier, you can see the comparison shots for Metal Gear Solid 2 and 3 in a post we put up earlier today.
Ishaan specializes in game design/sales analysis. He's the former managing editor of Siliconera and wrote the book "The Legend of Zelda - A Complete Development History". He also used to moonlight as a professional manga editor. These days, his day job has nothing to do with games, but the two inform each other nonetheless.