I went from a 2G to a 3GS, and I wouldn't call the speed difference, "mind-boggling". Yes, it's definitely faster, and the 3GS is definitely the one to get (if you get any kind of iPhone), but I wouldn't say that the difference is huge.
And, no, I don't think he's trolling. That "95%" number is pretty lame. I don't see how you can get any kind of meaningful mysterious numeric percentage just by measuring 8 apps. Now, the article might be good (no, I haven't read it), but that "95%" number just doesn't make any sense.
I went from a first-gen iPhone to an iPod touch 2G to an iPhone 3GS. The touch was a little faster than the first-gen iPhone, and the difference to the 3GS was still quite a bit. Just about every single task that previously had a noticeable delay got sped up by 3-10 seconds; from opening an app, to sending a photo in an email, to loading the next level in a game. And when you use the phone heavily, there's easily a dozen or two of those 3-10 second speed-ups in an hour.
Compared to my touch, I would, in fact, say that the 3GS is about or at least twice as fast in every way, objectively and subjectively.
There are also nice little differences that are much harder to quantify (or is qualify the word?).
Like scrolling through web pages. I hardly get the checkerboard now - only when 1) I tap the status bar to get to the top of the page, or 2) I needlessly scroll like a madman with total disregard for reading anything... and even then, it's there for only a fraction of the time it was on the iPod touch.
Scrolling and animations (drilling down in lists and getting that slide effect; screen rotation) are smoother, making it feel more responsive.
The keyboard keys respond better and there is no longer the occasional hiccup where it stops showing what you're typing for a second while the page is loading or something is going on in the background.
To say nothing of the improved framerate in every game.
Without knowing more about how you use it, I can't say for sure what about it you're missing, but there are definitely those of us who
are feeling that 2x that Apple is pushing.