Jackson has Granderson beat in just about every non-power category. His WAR is also considerably higher (4.1 compared to just 1.3 for Grandy). I figured I would include that for the "power hitters can have a low average and still be more valuable" crowd.
BA - Jackson: .310 | Granderson: .235
OBP - Jackson: .395 | Granderson: .329
HR - Jackson: 13 | Granderson: 30
RBI - Jackson: 53 | Granderson: 68
OPS - Jackson: .903 | Granderson: .807
K's - Jackson: 99 | Granderson: 145
K/BB ratio - Jackson: 1.904 | Granderson: 2.417
This doesn't even take into account Jackson's fielding ability, or the fact that he is quite a bit younger and yet to truly enter his prime.