He historically recommended macbooks because OSX was better. Having non-power users switch OS just doesn't seem like a very friendly recommendation to me. Maybe OSX is better, but it just isn't that better (FTFF).
My reason for preferring a macbook has always been about the hardware. Much better trackpads (only a few of the newest utlrabooks seem to have have finally gotten it right..in 2012), higher quality build, and I love the command-key (granted, this is largely due to OSX and how consistently it's used).
They simply make it more efficient to use a small form factor.
The MacBooks are stellar Windows laptops. Apple's Windows drivers are quite good. I do curse the placement of the control key on a daily basis, but it's a price I'm willing to pay.
Windows 7 is as good as OSX. Not the same, and it has its own weaknesses and foibles, meaning that it might not be as good an operating system for you, but for most users they're interchangeable quality wise.
I still prefer OS X to Windows 7, but the gap has closed up quite a bit and I couldn't guarantee that the cause for my preference doesn't ultimately boil down to it just being that I use one for play and the other for work.
I think that anyone could make a strong argument for why they subjectively believe that one or the other is objectively superior. But I long ago gave up on encouraging friends & family to try Macs. It's not worth the irritation of learning a new OS for them. For the Windows things I do still fret about like removing crapware and installing proper antivirus software, it's much easier for everyone involved if I just arm-twist them into letting me make sure everything's set up properly.
I would rather like to see a real review that takes both laptops apart, compares the quality of components, benchmarks both laptops properly, etc.
Without a proper comparison this is not more newsworthy than a comment...