I'm sure he means the big horticulture CFL's that come in 100, 150, 200, 250 and 300. They huge and are definitely 100 actual watts, not equivalent incandescent watts. I doubt he'd consider comparing anything different. The upside on those CFL's are you got very dense growth with lots of internodes. Can't match speed though.
How to calculate square footage for your surface area
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First: Measure the width (side to side) of the inside of your cab in inches.
Example: Width = 14"
Second: Measure the depth (front to back) of the inside
Example: Depth = 14"
Third: Multiply the width (in inches) by the depth (in inches)
Example: 14 x 14 = 169
Fourth: Divide the above answer by 144 to get square footage
Example: 169 / 144 = 1.17361 rounded to the nearest hundredth is 1.17 sq ft.
How much heat do HPS throw off compared to cfl's?