Dude… if the in game models aren’t accurate why the hell would WC3 be accurate?? Also, Wowpedia as a source can be a bit suspect, they’ve fallen down in terms of moderation lately. The height page alone (which I do reference) has changed about five times in the last year and used to have lore height estimates for several other races as opposed to just their in-game heights.
The only in-game model we know for sure is wrong is the Tauren one due to the game limitations, really. But we have no clue as to the variance of height with that page you linked. The disparities are all wonky too, the female Orc upper limit is 6’6" but the ‘average’ for male orc is 7’? And why is 7’ such a uniform height throughout in that first section?