Guys dont look at the in-game graphics, look at the Movies.. Ok.. So they are about the same. In war3 they did allot better with faces though, and animation.
See if you look at in game graphics you are just looking at what programming code they good do. Strarcraft was Iso metric. if they could of done better programmign they would of had it like War3... So dont judge the ingame graphics and compare. Thats stuff is just the programmers engine, running what it can.