I'd call this a perfect example of doing widescreen wrong. I don't knw what you guys are seeing, it keeps the same FOV as 4:3, but you lose the top and bottem. You're seeing less of the world, you're better off with 4:3, rather than that badly implemented widescreen.
Are you sure about that? Which game do you mean? In the screenshots linked, both "Giants: Citizen Kabuto" and "Guild wars" definately
add to the FOV - Guild wars cuts a small amount from the top and bottom to compensate, but it definately adds a lot more.
As X-warrior said, zooming ability in guild-wars pretty much makes it irrelevant as long as it keeps the correct aspect ratio and doesn't stretch, you can adjust the FOV to taste using the zoom function.