12 amps at 120 volts AC equals 1440 watts, all you get in the US and it is plenty. 2000 watts is off the hinge. We had all the same angst in California when the state instituted efficiency requirements for home appliances. The move was primarily to reduce the need to add more electrical generating capacity to the grid and reduce the degree of upgrading to residential grids that was being driven by the rapidly increasing demand for power from big screens, big screens in every room, cable boxes (surprisingly one of the bigger power draws in your home), PCs in every room, little digital read outs on all and sundry drawing power 24/7. Residential neighborhoods built in the 1950s, 60s and into the 80s were never built with power distribution systems meant to deal with the current decades huge per home power draw.
Faced with the cost of upgrading grids and adding more power plants, the state took a different tack, requiring more efficiency from appliances. We had the same howls of protest, and guess what? Nothing bad happened. In fact those California standards ended up being adopted nationwide. Clothes are washed as effectively today as ever and energy efficient refrigerators cool your food just as well as the old dinosaurs did.
I don't see a burning need for more than 1400 watts for a vacuum either. We have models for sale here that generate over 500 air watts on 12 amps (Lux Guardian Platinum is one and the Kenmore Progressive is just a smidge below 500 air watts). Do you need more than that? Just asking.