OMG !!!

I'm amazed at the amount of ignorance in this thread.
Why clueless people try to put nonsense in peoples' heads ?
MikeB is actually right : 1080p is a buzzword that means 1080 lines of vertical resolution for progressive image, nothing more, nothing less. The article in Wikipedia even says so and you people are still arguing.

The stupidest thing is that the people arguing don't even talk about the same thing. MikeB is refering to 1080p general meaning, while those arguing constantly talk about TV or TV standards, as it's usually the display medium, for which 1080p has been invented. But that's a special case of 1080p use, and a game is not a TV. So why are people saying 1080p for a 16:9 TV must mean the same as a 1080p game ? 1080p doesn't imply 1920 horizontal resolutions, except on 16:9 entities.
There's a reason another buzzword, FullHD, exists. That's because FullHD actually means 1920x1080 among other things. But there are a few FullHD games, and I'm not even sure they are called like that.

Logic fails most people it seems.

A game with 1080 vertical resolution is a 1080p game, as each frame is progressive. People arguing that are only arguing because they have some axe to grind, as there's no point in denying that what a 1080p game is.

This is one of these discussions that are only taking to place so someone is correct not to prove anything.

Yes 1080p strictly means 1080 vertical lines (so 1:1080 would qualify)
Yes 1080p in the TV environment normally means 1920:1080 so calling 1280:1080 1080p would be misleading.

So IMO GT:Prologue is not 1080p. On the other hand it has a higher resolution than any AAA game for 360/PS3 so far and it definitely is one (if not the) best-looking games todate (360, PS3, PC whatever).

Bottomline: These game A doesn't have 1080p or 60FPS or whatever discussions suck donkeyballs. Nobody cares about them. What is important is how the game looks. Its just some hard fact that's easier to argue about than Game A looks better than GameB so fanboys like it.