Huh? Apple offers 1366x768 in 11", 1440x900 in 13", and 1680x1050 in 15". The only comparable-and-better that I know of is the 1600x900 HP something-or-other.
They aren't standouts (although the 15" at 1680x1050 is really nice), but they're no worse than anybody else.
EDIT: I misread the original post. Sorry about that. That said, OS X isn't appreciably worse as far as resolution independence than the rest of your options. (Not that that's praise for OS X, but neither GNOME nor Windows are particularly good either.)
He's not talking about resolutions provided (and my Vaio has a 1920x1080 15" display if you're looking for examples there) he's talking about support for different DPIs.
Windows 7/8 "kinda" work in this regard - I have to use accessibility addons in firefox to make it play nice, IE just stretches everything, I have no experience with OSX.
The main problem is third-party apps that don't respect the settings. It's not a huge problem. I've noticed some of the UI elements in windows get distorted sometimes too.
Changing DPI settings still screws up various applications on Windows 7 (fonts on various UI elements don't scale consistently, e.g. Visual Studio 2010 is messed up, games are usually completely broken even modern ones like Starcraft II, etc.) and overall make the system very frustrating to use (especially annoying since I have a pair of IBM T221s capable of 3840x2400). That being said it's still worthwhile when I'm in e.g. Lightroom.
HP offered a 1920x1200 display in some of their 15" laptops. And Apple lagged behind in screen resolution for years (when I bought my Mac, 1440x900 was the highest res 15" display they sold).
Fair enough. I think saying OS X is "the worst offender" about resolution independence is at best hyperbolic, though. They're not good, but neither is anyone else.
They aren't standouts (although the 15" at 1680x1050 is really nice), but they're no worse than anybody else.
EDIT: I misread the original post. Sorry about that. That said, OS X isn't appreciably worse as far as resolution independence than the rest of your options. (Not that that's praise for OS X, but neither GNOME nor Windows are particularly good either.)