Video Comparison of Portal on PS3 and 360
The above video will provide you with a side-by-side look at both the Xbox 360 and PlayStation 3 versions of Portal, just as you can see the difference between the two versions of Half-Life 2 here. (Hit that link if you don’t know what caused all this hubbub in the first place.)
Unlike Half-Life, Portal seems to be running perfectly smooth and looks visually identical to the 360 version. The only noticeable difference you’ll find in watching the video above is that the PS3 version of Portal apparently takes 7-10 seconds longer to load than the 360 version. Definitely annoying, but also most definitely not a game breaker when you’re playing a good game.