My photo of Big Blue doesn't really do it justice. It has a crane that uses an aircraft cable and pulley system to help support the weight of the electrodes while the operator is using it:

In your analogy, it's more like bringing a crew-served weapon to a knife fight. It really is quite easy to use, though, and the welds are accomplished with the touch of a button. I've done a lot of body work on my Healey over the years at adult ed classes at local vocational schools and one of the advantages is they often have some really neat equipment an individual restorer couldn't afford to purchase. Randy's welder looks pretty neat as well and for the price he paid seems to be a really good alternative for producing spot welds in the home shop.