Ill split what both the previous guys have said and say that a razor is only aggressive if you use an aggressive angle or start messing with added pressure. Now of course various razors have differences in blade gap/exposure and i guess that could be looked at kind of like aggresiveness but i tend to not think of it that way.
Jerry: Why are you buttering your face?
Kramer: I'm shaving with it.
Jerry: Oh Moses smell the roses.
Kramer: Jerry, it's vastly superior to any commercial shaving cream. Now feel my face.