@roushimsx: From what I've gathered in these posts, and from what Wikipedia has to say, I think that the Wii/PS2 and PSP pages can be merged. Those differences that you outlined are minor, and could just be mentioned in the article. Really, roushimsx, this website is not like Moby Games, just catologuing every game separately. Rather, Giant Bomb is more of an encyclopedia, so differences can easily be detailed with the releases feature (again, exactly what it's for) and the main body of the page itself.
There are many other cases where there are small differences such as those between different versions of the game. Probably the one that I know the most about is the Chrono Trigger page. Now, there have been three specific versions of the game: Chrono Trigger (SNES), Chrono Trigger (PS1), and Chrono Trigger (DS). Perhaps the biggest differences are in the DS version, which has a bestiary, item and tech encyclopedia, and an all-new mode where the player can train "Smidges" in areas visited in the game. Naturally, there are even more differences, but I cover them all within the body of the Chrono Trigger page itself; no extra page required.
I don't know much about those other games you talked about (besides Aladdin, which definetely needs two pages, as the Genesis and SNES versions are waaaaaay different), but I'd be interested to know whether or not there was an "argument" for deletion. Did someone try and keep it from getting deleted?
Also, I think you're talking to me in your second post where you say some people are too lazy. Am I right?