While I love Anand and his website, that has got to be one of the dumbest quotes I've seen. Yes, compare an Athlon II to an i5 750 in price. There's a difference. Now compare an Athlon II to an i5 750 in performance. Yep, big difference (Source). The only point to the quote is that Intel doesn't produce a sub-$100 quad core CPU. That can be said on its own without trying to draw a non-existent comparison to AMD. A true comparison would be the i5 750 ($200) vs a Phenom II x4 955/965 ($160/$180) (Source 1/Source 2).
In the first source link, the i5 750 outperformed the Athlon II in almost every gaming related test. It was 50% better at WoW framerate. In the second and third source links, the i5 750 was comparable or better than the Phenom II's in every gaming test, including 24% better WoW framerate than the Phenom II x4 965 BE.
The Athlon II x4 635 isn't a bad budget processor, but I wouldn't really suggest someone upgrade to it at this point. I'd much prefer suggesting that someone save money and get either a Phenom II x4 or an i5/i7.
[edit: Also, the quote completely ignores the i3 530, which currently retails for $125.]