Armageddon is overkill. You will see the effects. You will hear the effects. You will feel your theater seats rumble from the affects of those effects. Armageddon is just a movie.
All movies require some measure of suspension of disbelief.
Disregard the fact that light bulbs on the counters at the Cape click like mechanical clocks. Ignore the fact that space stations orbiting our planet are not refueling ports for deep space missions, 'cuz there are no deep space missions and space stations are not built like fuel tankers. Ignore the fact that no civilized country would leave one man alone in a space station for eleven months. Ignore the fact that enduring a force nine times greater than gravity for eleven minutes, which is what the movie says our heroes will endure, would turn their bones to jelly. Ignore the fact that TWO shuttles, carrying TWO drilling teams to work on the rock carry only ONE nuke to blow this asteroid to smithereens.