I think you can put me down in the 'prefers samsung screen' camp. When looking at 13" LG and Samsung screens side by side, the LG appeared to have a brighter display, but the Samsung appeared to have better a contrast. In other words, black text on a white screen appeared to be darker than on the LG.
The apple person also could tell a difference (then again, he was an older bespectacled fart like me). I'm going to be doing a whole lot of looking at documents and text on mine in the next couple of years, so the difference was important to me.
If you can't tell a difference between your two screens, good. There's nothing to worry about. Quit reading these threads or they will drive you crazy.
Now, I agree about the screens on the 11's being absolutely stellar in general. But I suspect that may have something to do with them having more pixels per inch than the 13's.
When apple released the aluminum MacBooks in '08 (predecessor to the 13" MBP's), they had two or three different people making the screens that did vary wildly in quality. The difference I could tell between the LG and Samsung were nowhere nearly as bad.
And there's nothing resembling irrefutable proof that one screen is better than another unless and until some reputable folks get out some good cameras and compare the two. There is some evidence that people can see a difference, and there's conflicting testimony that others can't.
