Why use LED corn light to replacement 400W metal halide?

Why use LED lights to replacement metal Halide? 

100W LED corn light replacement 400W Metal halide warehouse lighting, pay for itself in less than 7months

The energy efficiency means money back in your pocket because you pay less on you energy bill. Use 100W LED corn light replacement 400W metal Halide bulb. To you it means you will be saving money on electricity while saving the environment.

Current Lighting Fixture(400W MH)		New LED light (100W LED corn light)
Current bulb Wattage	460	LED light wattage	100
Number of bulbs	18	Number of LED lights	18
Operating hours per day	8	Operating hours per day	8
Total Watts per day	66240	Total Watts per day	14400
Divided by 1000(KWh)	66.24	Divided by 1000(Kwh)	14.4
Operating days per month	22	Operating days per month	22
Total kWh cost per Month	1457.28	Total kWh cost	316.8
Current KWh cost	$0.15	Current KWh cost	$0.15
Per bulb maintenance & Ballast per month	0.51
Maintenance & Ballast per month total	$9.18
Cost per month to operate bulbs	$227.77	Cost per month to operate bulbs	$47.52
Cost per month to operate bulbs plus HVAC	$61.4
Total Annual cost to operate	$3143.25	Total Annual cost to operate	$570.24
Total annual CO2 emissions(Metric Tons)	10.87	Total annual CO2 emissions(Metric Tons)	2.36
HVAC loads@15% monthly cost	$34.17
		Total LED savings monthly	$214.42
		Total LED savings annually	$2573.01
		Total LED savings percentage	81.86%
		Total CO2 Emissions Reduction	78.26%

Customer using 400W metal halide in low bay lighting fixtures before, and not they want to use LED corn bulb to replacement existing 400W MH bulb without remove the lighting fixture.

Customer use our LED corn bulb 100W to replacing 400W metal halide.