It doesn't have much to do with the stretching of the backgrounds on PC that causes the poor quality to be aparent. it is the progressive refresh of PC monitors which are. I play FF7 PC on a TV and it looks just fine, because typical NTSC displays (North American/Japanese Televisions) are interleaved. In other words: only odd rows of pixels are refreshed in a single pass, then only even rows are refreshed. This makes the image much more blurry, and interpolates the pixelated mess that are backgrounds to a degree. Doesn't have anything to do with the images in either game, or the rendernig method either executable is utilizing to draw the screen. It is entirely dependant on the display device.