The only line that bugged me in that report was:
Actually, a better comparison would be to Blizzard's Diablo series, as the game offers players skill trees, and simple, mouse-driven combat that is nearly identical to that series.
Emphasis mine.
From what I saw warcraft 3 is indeed the better comparison as there arn't skill 'trees' (ala Diablo 2, WoW) more like skill 'lines' (ala warcraft 3, SoaSe) even though it is presented in a graphical form that would make the skills look like a tree, it is still basically the same leveling system.
(This is my WASD)