As the answer points out, Zerg rush is an offensive race-to-first-strike strategy aimed at destroying your adversary's production capacity quickly before it can be built up, while Jefferson's aim was defensive.
Also StarCraft usually starts with each side on an equal footing with no standing armies or resources and only base technology levels.
Also StarCraft usually starts with each side on an equal footing with no standing armies or resources and only base technology levels.