K, so I added in a bunch more games (Dead Nation, Blade Kitty - thanks badgenome for that one!) and I got higher rez screenshots for every game, plus some totally new screenshots here and there (EyePet, Heavy Rain).
They're mostly 720p shots, but I scaled all of them to ~780x438, giving each an exact 5px gap on the left and right sides. Of course, downscaling such images with the site's crappy scaler produces jaggiez, which is very apparent on some of the higher er rez shots (compare FFXIV's pristine 1080p shot to its 780 shot). I could've scaled these in GIMP for a somewhat smoother presentation (which is what I had to do for Blade Kitten anyhow), but that's way too much work!
I'm also thinkiing of changing the layout and centering the information before each screenshot.
@Kantor: According to IGN, that Age Of Zombies is actually a 360/PSP title. Not sure why we have it listed for ps3.