[MetsFanInPA]

I'm just spitballing, but if I had to guess it's because of the amount of memory it would take, among other factors, to deliver visually to the level that the PS4 is capable of. I think some of us including myself took for granted that we saw things like weather patterns and closed roofs on previous systems and just assumed we'd see those things in the newer tech. I see things visually, so I'd relate it like this - if you paint a small picture, it's tough to pick up on the inaccuracies of the work, whereas if you were to paint a mural on the side of a building, the blemishes would stand out a lot more, not to mention it would be far more time consuming and tougher to execute at a high level.