Like I said, it's all about Amps.
Let me make an analogy using cars.
We all know how Miles Per Gallons ratings work for our cars.
I can put 10 Gallons of fuel in two different cars, one a Hummer and the other a Sedan of some sort.
The 10 Gallons of fuel is our Watts and the Miles Per Gallon (MPG) is our Amps.
Now their both automobiles containing the same amount of fuel, so they should go the same distance, right?
We know that's wrong though, a Sedan has a more efficient engine in how it uses it's fuel and a lot less weight to move by just being smaller.
Yes, the Hummer is by far more powerful, but that raw power comes at a price, poor efficiency.
The Hummer will gulp that 10 Gallons up and get you several miles fast, but gas-out quickly before needing to be refueled.
The Sedan can't match the Hummer's top speed, but it can travel considerably farther on that 10 Gallons before it needs to be refueled.
We find out that the Hummer only gets 9 MPG and the Sedan gets 25 MPG (these numbers are fictitious and are only for the purposes of this example, actual brand mileage has not been checked by this poster).
So despite using up the same amount of fuel (Watts), the MPG rating (Amps) plays a huge role on how quickly that fuel is used.
Now let's say you have a 500 mile trip to make, do you want to pay to refuel twice or six times?
And yes, I would be able to run something in the neighborhood of 3-4 times what I currently am to see that $20 spike, 1W LED's are super efficient.
Um Ok.
If my 8 tube T5 is 192 watts at 1.2 amps and your led is 180 watts at 1.5 amps is the led still using 3x less the energy as the T5?