OK, everybody has seen the new energy saver fluorescent bulbs that try to compare their light output to the old traditional incandescent bulb by stating its wattage. So the package says it's a 60 watt bulb, even though it's only consuming a fraction of that in actual wattage.

So how do you compare the radiant heaters? I see one rated at 1200 watts of heat, but on the back it says 120 volt, 10 amp.
How is this any more efficient than old fashioned strip heat?

More to the point, is there a way to compare the efficiency of a radiant heater to its actual watt use? I've never seen a BTU rating on one.